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500 Crore Saal Ka Itihas | Dinosaurs, Insaan Aur Civilization Ki Puri Kahani (Hindi Documentary) โ€” Transcript

by ๐—จ๐—ป๐—ธ๐—ป๐—ผ๐˜„๐—ป ๐—œ๐˜๐—ถ๐—ต๐—ฎ๐—ฎ๐˜€ ยท 4,773 words ยท 776 segments ยท language en ยท Watch on YouTube

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  1. 0:01If I were to tell you to travel back 5
  2. 0:03billion years, you would find no humans
  3. 0:06, no dinosaurs, no forests, no oceans.
  4. 0:10A new planet slowly formed from dust,
  5. 0:13gas, and rocks swirling in space, but
  6. 0:15it wasn't the blue, beautiful Earth we
  7. 0:18see today. Initially, conditions were
  8. 0:21so dire that no human being could
  9. 0:23survive even a moment there. Then, in
  10. 0:27this seething, lifeless world,
  11. 0:28something happened that even science
  12. 0:30still doesn't fully understand. Life
  13. 0:33began here. First, tiny creatures, then
  14. 0:37strange sea animals, and then came the
  15. 0:39era when dinosaurs ruled the world for
  16. 0:41millions of years. But a devastating
  17. 0:45impact from space destroyed their world
  18. 0:47forever. With their extinction, the
  19. 0:50surviving small mammals, or
  20. 0:52milk-feeding creatures, found a new
  21. 0:54opportunity to expand, and one species
  22. 0:57emerged that learned to walk on two
  23. 0:59legs. They turned stones into weapons
  24. 1:01and gradually changed the map of the
  25. 1:03entire world. This is the story that
  26. 1:06brought us to humanity. But friends,
  27. 1:09the real questions begin now. If humans
  28. 1:12evolved from monkeys, why aren't
  29. 1:13today's monkeys becoming humans? If the
  30. 1:16first human was ever born on Earth,
  31. 1:18were their parents humans or something
  32. 1:20else? And if such powerful dinosaurs
  33. 1:23can become extinct after ruling for
  34. 1:25millions of years, is humanity truly
  35. 1:27the last chapter of this story? The
  36. 1:30answers to all three questions lie in
  37. 1:32this video. But to find out, we must
  38. 1:35travel back 5 billion years to where it
  39. 1:38all began. About 4.54 billion years ago
  40. 1:46, debris and rocks in space collided
  41. 1:48violently, and this great collision
  42. 1:51gave birth to our Earth. But if you
  43. 1:55were to look at the Earth at that time,
  44. 1:57it would seem nothing less than hell.
  45. 1:59Scientists call this period the Hadean,
  46. 2:02a name derived from the underworld of
  47. 2:04Greek mythology. All around was boiling
  48. 2:07lava, erupting volcanoes, and a rain of
  49. 2:10burning stones, or meteorites, falling
  50. 2:12from the sky. The air was so toxic that
  51. 2:15it contained no oxygen for breathing.
  52. 2:19For years, scientists believed that our
  53. 2:21Earth remained a ball of fire like this
  54. 2:23for millions of years. But then, in the
  55. 2:26hills of Western Australia, a piece of
  56. 2:28evidence was discovered that astonished
  57. 2:30the world of science. This evidence was
  58. 2:34a tiny crystal called zircon, the size
  59. 2:36of a grain of sand. When this crystal
  60. 2:39was examined in depth, a startling
  61. 2:41truth was revealed. Shortly after
  62. 2:44Earth's formation, about 4.4 billion
  63. 2:47years ago, some parts of the Earth's
  64. 2:49surface had cooled, indicating the
  65. 2:51presence of water. We don't know for
  66. 2:55sure whether oceans like today covered
  67. 2:57the entire planet at that time. But
  68. 2:59where water exists, there's room for a
  69. 3:02miracle: the miracle of life. Just
  70. 3:05imagine how life could have flourished
  71. 3:07in that boiling, toxic world. It's
  72. 3:10possible that life began near hot
  73. 3:13springs deep in the ocean. Some
  74. 3:15scientists also suggest other locations
  75. 3:17. The exact location remains a mystery,
  76. 3:20and within this mystery, one name is
  77. 3:22Luca. Luca wasn't the first life.
  78. 3:25Understand it simply. If we were to
  79. 3:28create a family tree of all living
  80. 3:31organisms today and trace it backwards,
  81. 3:33the oldest common ancestor we could
  82. 3:36find was Luka. Luka wasn't a human,
  83. 3:40animal, or fish, but a tiny creature
  84. 3:42invisible to the naked eye. According
  85. 3:45to a genetic study, Luka may have
  86. 3:47existed approximately 4.2 billion years
  87. 3:50ago. You'll be surprised to learn that
  88. 3:53Luka is the oldest ancestral relative
  89. 3:56of every human, every animal, every
  90. 3:59plant in the world today. It's possible
  91. 4:02that it lived in an oxygen-free
  92. 4:04environment, coexisting with other
  93. 4:05small organisms and viruses of that era
  94. 4:07. Imagine, even on the earliest pages
  95. 4:11of our story, life wasn't alone. Luka
  96. 4:14had somehow adapted to that toxic world
  97. 4:16. But the real storm was yet to come.
  98. 4:21On the shallow surface of the ocean,
  99. 4:23tiny organisms called cyanobacteria
  100. 4:25began to make their food from sunlight,
  101. 4:27just like plants and trees do today. We
  102. 4:31call this photosynthesis. But during
  103. 4:34this process, a gas also began to be
  104. 4:35released. This gas was extremely
  105. 4:37dangerous for most organisms living on
  106. 4:40Earth at that time. Almost like poison,
  107. 4:43and that gas was oxygen. Yes, that
  108. 4:46oxygen. Initially, this oxygen combined
  109. 4:49with iron dissolved in the ocean and
  110. 4:51settled down like rust, forming large
  111. 4:53layers of iron rocks around the world.
  112. 4:56For a very long time, the oceans and
  113. 4:59rocks absorbed this oxygen. But then a
  114. 5:01day came when there was nothing left to
  115. 5:03absorb. Now, oxygen had nowhere to hide
  116. 5:07. It started flowing from the water and
  117. 5:09directly into the air. Just imagine,
  118. 5:11the oxygen, without which we cannot
  119. 5:13survive even for a moment today, proved
  120. 5:16to be a terrible time for the organisms
  121. 5:18of that era. Most organisms of that
  122. 5:20time were accustomed to living without
  123. 5:22oxygen. Scientists call this long
  124. 5:25transition, which began about 2.45
  125. 5:28billion years ago, the period when the
  126. 5:30Earth's air was filled with oxygen for
  127. 5:33the first time. This new environment
  128. 5:36must have been fatal for many ancient
  129. 5:38organisms. However, we do not have a
  130. 5:41precise count of how many species
  131. 5:42became extinct. But it's a law of
  132. 5:45nature that the end of one becomes the
  133. 5:47beginning of another, and oxygen's game
  134. 5:49wasn't over yet. At that time, there
  135. 5:51was a lot of methane in the air. This
  136. 5:54gas surrounded the Earth like a blanket
  137. 5:57, keeping it warm. But oxygen combined
  138. 6:00with the methane and began converting
  139. 6:02it into water and carbon dioxide. As
  140. 6:05this warming blanket thinned, the
  141. 6:07Earth's temperature rapidly dropped,
  142. 6:10and large areas began to freeze. It
  143. 6:13seemed as if the story of life would
  144. 6:15end before it even began. But the heat
  145. 6:18of volcanoes hidden deep in the ocean
  146. 6:19prevented life from disappearing
  147. 6:21completely. Gradually, the ice melted,
  148. 6:24and the weather began to change again.
  149. 6:27Meanwhile, a silent event occurred
  150. 6:28without which you and I would not be
  151. 6:31here today. Some tiny cells swallowed
  152. 6:35other bacteria but did not digest them.
  153. 6:38Those bacteria remained inside and
  154. 6:40began to provide energy to them. This
  155. 6:42partnership created a kind of
  156. 6:44powerhouse within the cells called
  157. 6:45mitochondria. Today, this same
  158. 6:48powerhouse is functioning in every cell
  159. 6:50of your body. Later, similar cells made
  160. 6:53the story of plants, animals, and our
  161. 6:56own bodies possible. First, many cells
  162. 6:58began to live together. Then they
  163. 7:00divided tasks among themselves: one
  164. 7:02digested food, the other protected.
  165. 7:04After millions of years of this slow
  166. 7:06preparation, about 720 to 635 million
  167. 7:09years ago, the Earth experienced the
  168. 7:11most devastating icy period in its
  169. 7:13history. This is known as Snowball
  170. 7:17Earth. Whether the Earth was completely
  171. 7:20frozen or only some areas of water
  172. 7:21remained open. Scientists still debate
  173. 7:24this, and when this ice melted,
  174. 7:25something never before seen in the
  175. 7:27ocean was revealed. About 570 to 540
  176. 7:31million years ago, strange, soft,
  177. 7:33leaf-like organisms called Ediacarans
  178. 7:36began to appear in the ocean. Now the
  179. 7:39stage was set for the next big
  180. 7:41explosion. About 540 million years ago,
  181. 7:44a variety of new body types suddenly
  182. 7:46appeared in marine life. This is called
  183. 7:49the Cambrian Explosion. But this was
  184. 7:51not a one-day explosion; rather, it was
  185. 7:54a transformation that occurred over
  186. 7:55millions of years, as fast as the blink
  187. 7:58of an eye in Earth's history. Organisms
  188. 8:00that had previously consisted of just
  189. 8:02one or a few cells now began to develop
  190. 8:04larger and more complex bodies. The
  191. 8:07seas were awash with strange armor,
  192. 8:10sharp spines, and dozens of legs for
  193. 8:12locomotion. Among these creatures,
  194. 8:16trilobites were prominent, crawling
  195. 8:18along the ocean floor. But the ocean
  196. 8:20was no longer calm. Predators had also
  197. 8:23arrived. Many possessed remarkable eyes
  198. 8:25and prey-catching organs. Life was no
  199. 8:28longer merely a struggle for survival
  200. 8:30but a dangerous game of prey and
  201. 8:32predator. Amidst this turmoil, a tiny
  202. 8:35entity emerged in the ocean that would
  203. 8:37determine the future of the entire
  204. 8:39planet. Some creatures had a flexible
  205. 8:42rod-like structure in their backs
  206. 8:44called the notochord. Later, in their
  207. 8:46descendants, this rod evolved into a
  208. 8:49backbone. This is how the first strange
  209. 8:52jawless fishes were seen swimming in
  210. 8:54the ocean. Little did they know that
  211. 8:58this same backbone would later support
  212. 9:01the massive bodies of dinosaurs and,
  213. 9:03much later, enable humans to stand
  214. 9:05upright. Jawed fish spread in the
  215. 9:09subsequent period. This is where the
  216. 9:12real story begins, leading directly to
  217. 9:14you and meโ€”humans. If you're thinking
  218. 9:18humans evolved directly from apes, wait
  219. 9:21. That's not even half the truth. Our
  220. 9:24real story begins millions of years ago
  221. 9:25with a unique fish that swam in the
  222. 9:27water. About 375 million years ago,
  223. 9:31creatures living in rivers, swamps, and
  224. 9:34shallow waters were grappling with
  225. 9:36various challenges. Water was receding,
  226. 9:39and the environment was changing. Then,
  227. 9:41some fish began developing stronger
  228. 9:44bone structures within their fins.
  229. 9:47These are called lobe-finned fish. Some
  230. 9:52of these creatures began to propel
  231. 9:54themselves with their fins in shallow
  232. 9:55water and lift their heads above the
  233. 9:57water. One of these very famous
  234. 10:00creatures was Tiktaalik. It was a fish,
  235. 10:02but its fins and neck had features
  236. 10:05reminiscent of later land animals.
  237. 10:09Tiktaalik's direct ancestor isn't
  238. 10:11guaranteed, but it's a remarkable
  239. 10:13fossil that illustrates that major
  240. 10:15transformation. The journey from water
  241. 10:18to land took many branches and over a
  242. 10:20long period of time. These gave rise to
  243. 10:23tetrapods, four-legged creatures. But
  244. 10:25dinosaurs were still a long way off.
  245. 10:27Plants and trees were already spreading
  246. 10:29on land. Then forests grew denser, and
  247. 10:32insects and other small creatures
  248. 10:33flourished. But these early four-legged
  249. 10:36creatures faced a major constraint.
  250. 10:38They couldn't completely free
  251. 10:40themselves from water because their
  252. 10:42eggs needed moisture. Then, about 320
  253. 10:45million years ago, a remarkable change
  254. 10:47occurred. Some creatures developed a
  255. 10:49protective shell around their eggs and
  256. 10:52a water sac inside. Now, they could
  257. 10:54give birth on dry land, away from water
  258. 10:56. This is where the path split into two
  259. 10:59. On one side emerged the branch that
  260. 11:02later gave rise to reptiles, birds, and
  261. 11:04dinosaurs. On the other side, a long
  262. 11:08branch led to mammals, milk-feeding
  263. 11:10creatures like us. Don't think of this
  264. 11:12as a straight line. It was a tree with
  265. 11:15branches growing in different
  266. 11:17directions. But a storm was about to
  267. 11:19hit that tree, uprooting almost
  268. 11:21everything, and this storm was even
  269. 11:23greater than the one that destroyed the
  270. 11:25dinosaurs. Around 252 million years ago
  271. 11:29, at the end of the Permian period,
  272. 11:32Earth witnessed its largest known mass
  273. 11:34extinction. Massive volcanic eruptions,
  274. 11:38rising temperatures, and depleted ocean
  275. 11:40oxygen severely crushed life. Most
  276. 11:43marine species were wiped out. Land
  277. 11:46also suffered significant losses.
  278. 11:48Scientists call it the Great Dying.
  279. 11:52Imagine if the story of that era had
  280. 11:54turned differently, Earth might have
  281. 11:56been populated by creatures we don't
  282. 11:58even know existed. After this
  283. 12:00catastrophe, new life began to flourish
  284. 12:02in the empty spaces. The earliest
  285. 12:04dinosaurs appeared around 230 million
  286. 12:06years ago. But they didn't immediately
  287. 12:09dominate the world. Alongside them were
  288. 12:13many other powerful groups of reptiles.
  289. 12:16As time passed, competitors dwindled,
  290. 12:18and dinosaurs evolved into diverse
  291. 12:20forms. Some were small and agile, some
  292. 12:23were large, long-necked herbivores, and
  293. 12:25some were ferocious predators. Now, a
  294. 12:30fact that few people know: In this same
  295. 12:31dinosaur-like world, early mammals also
  296. 12:33lived. Most were small, stealthy, and
  297. 12:35nocturnal. This means that mammals
  298. 12:39didn't emerge after the extinction of
  299. 12:40dinosaurs. Both coexisted for millions
  300. 12:43of years. And then, another interesting
  301. 12:45twist: not every dinosaur disappeared
  302. 12:47completely. Birds emerged from a branch
  303. 12:49of small, winged predatory dinosaurs.
  304. 12:52The bird sitting on your window sill
  305. 12:54today is a living link to that old
  306. 12:56story. Over time, flowering plants also
  307. 12:58began to spread, and the landscape of
  308. 13:00forests changed. The world continued
  309. 13:03like this for millions of years, and
  310. 13:04then came the day we promised at the
  311. 13:06beginning. Exactly 66 million years ago
  312. 13:10, a rock the size of a mountain from
  313. 13:13space struck the Earth near Mexico. The
  314. 13:16impact was so devastating that the
  315. 13:18largest dinosaurs were wiped out
  316. 13:21forever. Only birds, a branch of them,
  317. 13:24survived, and still live today. The sky
  318. 13:27was covered in smoke and dust for
  319. 13:29months. Sunlight vanished, and a
  320. 13:31deathly silence spread everywhere. But
  321. 13:35while the mighty dinosaurs were
  322. 13:37disappearing, beneath their feet, some
  323. 13:39tiny, mouse-like mammals hid in burrows
  324. 13:42. They were very small. They ate less
  325. 13:45and could hide underground. Therefore,
  326. 13:48they somehow survived that catastrophic
  327. 13:50catastrophe. When the dinosaurs 'empire
  328. 13:53ended, the entire world became empty.
  329. 13:55These small mammals now found open
  330. 13:57skies and countless opportunities to
  331. 13:59survive. Over time, these tiny
  332. 14:01creatures began to evolve into
  333. 14:03different forms. Some took to the water
  334. 14:06, like whales and dolphins. Some flew
  335. 14:08through the air as bats, and some made
  336. 14:10the trees of dense forests their homes.
  337. 14:13This is where primates were born:
  338. 14:16monkeys, apes, and our ancient
  339. 14:18relatives. And now comes the first
  340. 14:20question: If humans evolved from
  341. 14:22monkeys, why aren't today's monkeys
  342. 14:24evolving into humans? The answer lies
  343. 14:27right here. About 60 to 70 million
  344. 14:30years ago, a creature lived in the
  345. 14:32forests of Africa that was the common
  346. 14:34ancestor of both us and today's
  347. 14:36chimpanzees. This means that we didn't
  348. 14:39evolve from any of today's monkeys.
  349. 14:41Rather, we and chimpanzees shared a
  350. 14:43common great-grandfather, just as you
  351. 14:45and your cousins are descendants of the
  352. 14:47same grandfather. But you weren't born
  353. 14:49from your cousin. Similarly,
  354. 14:52chimpanzees aren't our ancestors,
  355. 14:54they're our distant cousins, and a
  356. 14:56cousin can never become you. Over time,
  357. 14:59two branches of that great-grandfather
  358. 15:01took completely different paths. The
  359. 15:04first branch remained in the dense,
  360. 15:06protected forests, eventually giving
  361. 15:07rise to chimpanzees and bonobos, which
  362. 15:09still live in trees today. The second
  363. 15:13branch, in a strange twist of fate,
  364. 15:15moved beyond the forests into the dry,
  365. 15:17open grasslands. There were no longer
  366. 15:20trees to hide in, and dangerous
  367. 15:22predators lurked all around. It was
  368. 15:24either adapt or perish. And this is
  369. 15:26where this creature turned its
  370. 15:28helplessness into its strength. It
  371. 15:31began to stand upright on its hind legs
  372. 15:33, raised its head to see farther, and
  373. 15:35its descendants later learned to make
  374. 15:37tools from stones. An interesting
  375. 15:41observation: bipedalism came first, but
  376. 15:43larger brains came much later. For
  377. 15:46millions of years, our ancestors walked
  378. 15:48on two legs, even though their brains
  379. 15:49were much smaller than those of today's
  380. 15:51humans. But this journey wasn't a
  381. 15:53straight ladder. At that time, many
  382. 15:56different species of human-like
  383. 15:58creatures coexisted. Some flourished,
  384. 16:01while others gradually disappeared.
  385. 16:04Among these early groups, the family
  386. 16:06whose most numerous and most famous
  387. 16:08fossils have been found is called
  388. 16:10Austelopithecus by scientists. This
  389. 16:13means southern ape. The most
  390. 16:16revolutionary discovery was the fossil
  391. 16:18of Lucy, who lived in Ethiopia about
  392. 16:203.2 million years ago. Her brain was
  393. 16:23much smaller than that of modern humans
  394. 16:25. Her face, about the size of a
  395. 16:27chimpanzee, and her jaw were also
  396. 16:29largely ape-like. But the most
  397. 16:31significant changes were in her legs
  398. 16:33and waist. Lucy's species could walk on
  399. 16:36two legs daily. Yet, they retained the
  400. 16:38ability to climb trees. This wasn't a
  401. 16:41story of a single night of leaving the
  402. 16:43trees and descending to the ground. Now
  403. 16:46, a discovery has surprised even
  404. 16:48scientists. Around 3.3 million years
  405. 16:51ago, during Lucy's time, an early human
  406. 16:54relative broke stones to make tools.
  407. 16:57Who made these tools? It's still
  408. 17:00unknown. Gradually, our ancestors
  409. 17:03realized that striking a round stone
  410. 17:05against another stone with force would
  411. 17:07break off a sharp piece. Later, these
  412. 17:12sharp tools were used to skin animals,
  413. 17:14cut meat, and peel twigs. Carving stone
  414. 17:18required thinking, planning, and
  415. 17:20hand-eye coordination, and this is
  416. 17:22where our ancestors' craft truly gained
  417. 17:25momentum. As time progressed, another
  418. 17:29branch of this large family emerged,
  419. 17:31one that scientists named Homohabulus,
  420. 17:33meaning "skilled man." They made stone
  421. 17:37toolmaking a common practice. When they
  422. 17:40began breaking animal bones with stones
  423. 17:43and eating the insides and flesh, their
  424. 17:45bodies provided a nutritious diet. It
  425. 17:48is believed that this diet helped their
  426. 17:51brains grow. Until now, our ancestors
  427. 17:53were confined to Africa. But about 1.9
  428. 17:57million years ago, a creature emerged
  429. 17:59that broke all boundaries. It was Homo
  430. 18:03erectus, meaning "upright man." Its
  431. 18:06body, like that of modern humans, was
  432. 18:08tall, slender, and completely upright.
  433. 18:11Long legs allowed them to walk and run
  434. 18:13long distances. These were the humans
  435. 18:17who first spread out of Africa into
  436. 18:19Asia, and with these later human
  437. 18:21populations, evidence of the use of
  438. 18:23fire begins to emerge. However, who
  439. 18:26first controlled fire? This is still a
  440. 18:28matter of debate. Now, a question
  441. 18:30arises: when so many species of early
  442. 18:32humans roamed the Earth simultaneously,
  443. 18:35why did only we, Homo sapiens, survive?
  444. 18:37Where did everyone else go? A major
  445. 18:39reason for this was our ability to
  446. 18:41adapt and bond during difficult times.
  447. 18:45Whenever the Earth faced severe
  448. 18:46droughts, climate changes, or ice
  449. 18:48freezes, species that relied solely on
  450. 18:50a single environment or diet faced
  451. 18:52difficulties. But those with flexible
  452. 18:56minds created new tools, communicated
  453. 18:58through gestures and speech, helped
  454. 19:00each other, and adapted to the
  455. 19:02ever-changing climate. About 300,000
  456. 19:05years ago, our own species, Homo
  457. 19:08sapiens, appeared in Africa. And now,
  458. 19:11the answer to the second initial
  459. 19:12question: were the first human's
  460. 19:14parents humans or something else? The
  461. 19:16truth is that there was never a single
  462. 19:19first human being. Changes occurred so
  463. 19:21gradually over thousands of generations
  464. 19:23that each child resembled their parents
  465. 19:25. Just as you can't tell a single day
  466. 19:29from your childhood photo to the day
  467. 19:31you grew up, there wasn't a single day
  468. 19:34in this journey when the first human
  469. 19:36was born. But the journey from the
  470. 19:39first population to today's humans was
  471. 19:41also a long one. At different times,
  472. 19:44various groups of Homo sapiens left
  473. 19:46Africa, and when they left, they found
  474. 19:48the world empty. Other human species
  475. 19:52already lived in Europe and Asia.
  476. 19:55Somewhere there were Neanderthals,
  477. 19:56somewhere there were other ancient
  478. 19:58humans like Denis Owens. This means
  479. 20:00that we weren't the only humans on
  480. 20:01Earth at that time. Many different
  481. 20:04human groups that looked like us
  482. 20:06existed at the same time, and this is
  483. 20:08where the most fascinating game of
  484. 20:10history took place, the effects of
  485. 20:12which are present within your own body
  486. 20:14today. Imagine, thousands of years ago,
  487. 20:18when our ancestors reached new
  488. 20:19territories, they must have encountered
  489. 20:21these other humans. Sometimes there
  490. 20:24were competitions over food and shelter
  491. 20:26. But not every encounter ended in war.
  492. 20:29In many places, these different human
  493. 20:31groups met, lived together, and had
  494. 20:33children, and the DNA of those children
  495. 20:35continued to be passed on to subsequent
  496. 20:37generations. This is why many people
  497. 20:40living outside Africa today have a
  498. 20:42small portion of Neandrotholes in their
  499. 20:44DNA. This means that Neandrotholes did
  500. 20:48not disappear completely, leaving no
  501. 20:50trace of them. Some of our genes
  502. 20:53related to disease resistance and cold
  503. 20:55climates also show the influence of
  504. 20:57these ancient humans. And the story is
  505. 21:00not limited to the Neanderthals. In
  506. 21:02some parts of Asia, our ancestors also
  507. 21:05met Denisovans. Very few of their bones
  508. 21:08have been found: a few teeth, a finger
  509. 21:10bone. But the DNA from that small
  510. 21:12fragment reveals a lot about them.
  511. 21:15Today, some people, especially in Asia
  512. 21:17and Oceania, carry traces of Denisovan
  513. 21:19DNA. This means that the influence of
  514. 21:22some encounters that occurred thousands
  515. 21:24of years ago continues to flow in the
  516. 21:25human bloodstream. Now, it is very
  517. 21:28important to understand one thing here:
  518. 21:29Homo sapiens were not superhumans.
  519. 21:31Neanderthals were powerful. They were
  520. 21:34accustomed to cold climates and were
  521. 21:36highly skilled hunters. The
  522. 21:37Dniestrovans were also well-adapted to
  523. 21:40living in harsh terrain. Homo sapiens
  524. 21:42could form large groups, transmit
  525. 21:45information, and learn new methods
  526. 21:47quickly. But other human species were
  527. 21:50also intelligent. No single cause can
  528. 21:52be pinpointed for their extinction.
  529. 21:55Gradually, Homo sapiens 'numbers
  530. 21:57increased. They spread into new areas,
  531. 22:00developed better tools, maintained
  532. 22:02contact with distant groups, and
  533. 22:04jointly hunted large animals.
  534. 22:07Neanderthals, on the other hand, were
  535. 22:09much smaller and fragmented into
  536. 22:10smaller groups. The climate was
  537. 22:13changing, their food was changing, and
  538. 22:14the pressure of new humans was
  539. 22:16increasing. The extent of all this
  540. 22:19impact remains an open question. By
  541. 22:22about 400 years ago, the Neanderthals
  542. 22:24gradually disappeared. The Dniestrovans
  543. 22:28also ceased to be a distinct species.
  544. 22:31However, a part of them had assimilated
  545. 22:33into Homo sapiens, and that part still
  546. 22:36lives on in our DNA. Gradually, only
  547. 22:39one human species remained on Earth:
  548. 22:41Homo sapiens, meaning us. But survival
  549. 22:44alone wasn't enough. To rule the world,
  550. 22:47humans needed something else: fire.
  551. 22:51Initially, humans were very afraid of
  552. 22:53lightning strikes or natural forest
  553. 22:56fires. However, over time, some groups
  554. 22:59of humans learned to use and manage
  555. 23:02fire. Fire served as a shield to ward
  556. 23:06off dangerous animals in the dark. When
  557. 23:09they began roasting meat, it became
  558. 23:11softer and more easily digestible.
  559. 23:14Cooked food may have been helpful in
  560. 23:16chewing and digesting it. However, this
  561. 23:18alone cannot be considered the reason
  562. 23:20for the brain's enlargement. Sitting
  563. 23:23around a fire on cold nights may have
  564. 23:25provided people with opportunities to
  565. 23:27socialize and converse. No definitive
  566. 23:30date has been found for the origin of
  567. 23:33language. As humans moved into colder
  568. 23:36regions, a new challenge arose: they
  569. 23:39lacked the dense hair of animals, and
  570. 23:41the cold was deadly. Over time, methods
  571. 23:44of covering the body developed, and
  572. 23:46later, extremely fine needles were made
  573. 23:49by grinding animal bones. This allowed
  574. 23:51for sewing animal skins into wearable
  575. 23:53clothing. Clothing allowed humans to
  576. 23:56survive even in the coldest parts of
  577. 23:58the earth. Time progressed thousands of
  578. 24:01years. Around 12,000 years ago, the
  579. 24:03climate in some parts of the world
  580. 24:05became more stable. Many groups still
  581. 24:08lived on hunting, fishing, and wild
  582. 24:11plants. But in some places, people
  583. 24:14discovered something that changed human
  584. 24:16life forever. If seeds were sown and
  585. 24:20plants and animals were cared for, food
  586. 24:22for the next season could be grown.
  587. 24:26Farming wasn't a one-day invention by a
  588. 24:28single person. Different regions
  589. 24:30domesticated different crops and
  590. 24:32animals at different times. Many
  591. 24:34societies survived without farming for
  592. 24:36much longer. Farming offered new
  593. 24:38opportunities, but also new burdens.
  594. 24:40Now, grain could be stored. Large
  595. 24:42families and groups could be fed. But
  596. 24:46with it came the fear of crop failure,
  597. 24:48diseases spread by living near animals,
  598. 24:50conflicts over land, and the growing
  599. 24:52divide between rich and poor. Imagine a
  600. 24:55family facing this question for the
  601. 24:58first time. Whose land is this, and who
  602. 25:01will keep track of next year's harvest?
  603. 25:03By now, humans had learned to farm in
  604. 25:05many places. Villages had been
  605. 25:06established. But transporting heavy
  606. 25:08goods from one place to another was
  607. 25:10still a headache. About 5,500 years ago
  608. 25:14, humans discovered something that
  609. 25:16truly set the wheels of history in
  610. 25:18motion. The earliest evidence of the
  611. 25:22wheel, the rotating wheel for pottery,
  612. 25:24and wheeled carts dates back to around
  613. 25:26this time. Who invented the first wheel
  614. 25:29? There's no definitive answer. But
  615. 25:31once the wheel was attached to the axle
  616. 25:33, carrying heavy goods became
  617. 25:34infinitely easier. Then came the
  618. 25:37development of bullock carts, trade
  619. 25:39flourished, regions began to connect
  620. 25:41with each other, and human mobility
  621. 25:43increased exponentially. Until then,
  622. 25:45humans had wandered in small tribes,
  623. 25:48but new methods of farming and
  624. 25:49transporting goods taught them to
  625. 25:52settle down. This gave birth to
  626. 25:55villages, from villages to cities, and
  627. 25:57from cities to the world's first great
  628. 25:59civilizations. But where there is
  629. 26:01abundant grain, questions arise: Who
  630. 26:04will preserve it? Who would divide the
  631. 26:07land and protect the village from
  632. 26:09outside raiders? People devised
  633. 26:11different systems for these tasks. In
  634. 26:13some places, the sharing of grain and
  635. 26:16water, in others, trade, in others,
  636. 26:18warfare, and in others, religion gave
  637. 26:20more power to some individuals. The
  638. 26:22story of becoming king was not the same
  639. 26:24everywhere. As cities grew, it became
  640. 26:26difficult to keep track simply by
  641. 26:28memory. Who had stored how much grain?
  642. 26:30Who was to give what? Then people began
  643. 26:33marking things, and then gradually,
  644. 26:35methods of writing were developed.
  645. 26:37Because of this writing, we are able to
  646. 26:39read their words even thousands of
  647. 26:41years later. About 5,000 years ago, the
  648. 26:44earliest kingdoms and kings began to
  649. 26:46emerge along the fertile rivers of
  650. 26:48Mesopotamia and Egypt. Now, humans were
  651. 26:51no longer fighting merely for survival.
  652. 26:53Now there were palaces, golden crowns,
  653. 26:56and vast armies. The divide between
  654. 26:58rich and poor deepened in society, a
  655. 27:00distinction that remains with us even
  656. 27:02today. When kings gained access to
  657. 27:05grain, money, and the power of
  658. 27:06thousands of laborers, they set out to
  659. 27:08achieve something that would be
  660. 27:10remembered for centuries: their desire
  661. 27:12to remain immortal even after death.
  662. 27:16Egyptian kings believed that their
  663. 27:18souls would remain alive and in need of
  664. 27:20their bodies. Therefore, they preserved
  665. 27:24their bodies by wrapping them in spices
  666. 27:26and cloth, turning them into mummies,
  667. 27:28and erected the world's most mysterious
  668. 27:30structures: the pyramids. Just imagine,
  669. 27:34thousands of years ago, when there were
  670. 27:36no tools or modern machinery, massive
  671. 27:38stones were hauled from far and wide
  672. 27:40across the desert. They were placed one
  673. 27:44on top of the other with such amazing
  674. 27:46precision that even today's engineers
  675. 27:48are amazed by the planning and effort
  676. 27:50involved. The Great Pier was initially
  677. 27:54about 147 meters high, roughly the
  678. 27:56height of a 45-story building. We know
  679. 27:59of many methods for transporting and
  680. 28:01joining the stones, but scientists
  681. 28:03still disagree on every small step.
  682. 28:05This was proof that the human mind was
  683. 28:08no longer just working to survive, but
  684. 28:11to reach the sky. Not just the pyramids
  685. 28:14, kings also built colossal statues to
  686. 28:17display their power and their deities.
  687. 28:20Be it the swings of Egypt or the
  688. 28:22massive stone statues of Mesopotamia
  689. 28:24and later Greece and India, all
  690. 28:26testified that humans were no longer
  691. 28:28carving stone into mere hunting tools,
  692. 28:31but rather into symbols of their faith
  693. 28:33and power. But after the pyramids, the
  694. 28:36human journey didn't stop there; it
  695. 28:38accelerated, transforming the entire
  696. 28:40map of the earth in just a few thousand
  697. 28:42years. People in different societies
  698. 28:46had long been observing nature, asking
  699. 28:48questions, calculating, and discovering
  700. 28:50new methods. Thinkers in Greece, India,
  701. 28:53China, and Egypt began to ask questions
  702. 28:56: why do stars shine in the sky? Are
  703. 28:58diseases caused by natural causes
  704. 29:01rather than curses? What are the laws
  705. 29:03of the universe? This path, too, wasn't
  706. 29:05a fast-forward from a movie. The use of
  707. 29:08bronze, and then iron, transformed
  708. 29:10tools and weapons. Trade routes
  709. 29:13connected distant regions. Empires were
  710. 29:16formed and destroyed. Mathematics, star
  711. 29:18calculations, medical treatments, and
  712. 29:20agricultural methods progressed across
  713. 29:22civilizations. Paper and printing,
  714. 29:23developed in China, facilitated the
  715. 29:25spread of knowledge. Sea voyages
  716. 29:27connected distant societies, but in
  717. 29:30many places, they also brought violence
  718. 29:32, slavery, and disease. Then, the
  719. 29:35methods of testing truth through
  720. 29:37experimentation, measurement, and
  721. 29:38debate, which we now call science,
  722. 29:40transformed the very way we ask
  723. 29:41questions. But the most dramatic turn
  724. 29:44in this long journey was yet to come.
  725. 29:47Humans recognized the power of coal and
  726. 29:49steam. The era of manual labor began to
  727. 29:52end, and large factories, locomotives,
  728. 29:55and trains emerged. Distances that once
  729. 29:57took months were now covered in a
  730. 29:59matter of days. The pace of
  731. 30:02technological change in the last 100
  732. 30:04years has been unprecedented in human
  733. 30:07history. Electricity illuminated the
  734. 30:10nights. Clean water and medical care
  735. 30:12saved millions of lives. However, not
  736. 30:14everyone benefited equally from these
  737. 30:16facilities. Then, computers and the
  738. 30:18internet made information accessible
  739. 30:20worldwide in the blink of an eye. We've
  740. 30:24set foot on the moon and sent
  741. 30:25telescopes into space that observe
  742. 30:27galaxies billions of light years away.
  743. 30:31We've crammed the entire world into a
  744. 30:34mobile screen, and today, artificial
  745. 30:36intelligence (AI) is rapidly
  746. 30:38transforming the way we work,
  747. 30:39communicate, and make decisions. And
  748. 30:43now comes the third and most important
  749. 30:45question from the beginning: Is
  750. 30:47humanity the last chapter of this story
  751. 30:48? Imagine that 4.54 billion-year-old
  752. 30:52story, where the first branches of life
  753. 30:55were sprouting in a dark, oxygen-free
  754. 30:57ocean on a boiling ball of lava. Where
  755. 31:01Luka was a very early stop for that
  756. 31:03ancestral tree. The journey began there
  757. 31:07, traversing an ice-cold Earth,
  758. 31:09learning to walk on land from fish,
  759. 31:11making tools from stones, lighting fire
  760. 31:14, building pyramids, and today, rockets
  761. 31:17have reached space. But today, humans
  762. 31:21possess nuclear weapons that can cause
  763. 31:24massive damage to all of human
  764. 31:25civilization, and climate change
  765. 31:27threatens our own world. Dinosaurs were
  766. 31:31wiped out by a rock from space. But are
  767. 31:35we making our own rock? So now the
  768. 31:40question is: will this human progress
  769. 31:42continue like this, or will humans,
  770. 31:44like dinosaurs, vanish from the face of
  771. 31:46the earth millions of years ago, one
  772. 31:48day become just another page in this
  773. 31:504.54 billion-year-old book? Let me know
  774. 31:52in the comments. If you enjoyed this
  775. 31:58documentary, please like, share, and
  776. 32:01tell your friends where we came from.

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This page contains the full transcript of 500 Crore Saal Ka Itihas | Dinosaurs, Insaan Aur Civilization Ki Puri Kahani (Hindi Documentary) by ๐—จ๐—ป๐—ธ๐—ป๐—ผ๐˜„๐—ป ๐—œ๐˜๐—ถ๐—ต๐—ฎ๐—ฎ๐˜€, generated from the public captions YouTube serves with the video. The transcript has 4,773 words across 776 segments, with the original timestamps preserved so you can click any line to jump to that moment in the embedded player.

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