New fossil analysis confirms Tyrannosaurus rex was warm-blooded | September 21, 2026 — Transcript

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1. 0:03[music]
2. 0:11>> Hello everybody. I'm Allison Chinchar in
3. 0:13for Coy Wire and you're watching CNN 10.
4. 0:17Now today is Monday September 21st.
5. 0:19Let's get to your news. We begin in
6. 0:21South Africa where officials are trying
7. 0:24to address a problem at the intersection
8. 0:26of public safety and nature
9. 0:28conservation. Troops of baboons are
10. 0:31roaming neighborhoods in Cape Town
11. 0:33damaging property and causing residents
12. 0:35to fear for their safety. CNN's Larry
13. 0:38Madowo explains a controversial plan to
14. 0:41address the problem.
15. 0:43>> Cape Town residents are taking notice of
16. 0:46a growing controversy over baboons and
17. 0:49what to do about them.
18. 0:51Troops of baboons are roaming the
19. 0:53streets, raiding homes, and riling up
20. 0:56residents.
21. 0:58These Chacma baboons are Southern
22. 1:00Africa's largest monkey species and as
23. 1:02the city expands, conflict between
24. 1:04baboons and residents has grown.
25. 1:08And now the city has a plan to solve
26. 1:10their primate problem.
27. 1:12Permanently cage around 60 of the
28. 1:14animals as an alternative to culling.
29. 1:17>> And then we are left with two very
30. 1:18difficult decisions. We could either
31. 1:19cull the troops which is arguably the
32. 1:21ecological solution or we could um find
33. 1:25a space that we could set up an urban
34. 1:27wildlife center and allow those animals
35. 1:29in those troops
36. 1:30to live out their lives in a high
37. 1:32standard of care with a quality of
38. 1:33environment.
39. 1:35>> But that plan has sparked an outcry and
40. 1:37fierce debate. Should baboons that have
41. 1:40adapted to city life be confined or
42. 1:42should people find a way to coexist with
43. 1:45them?
44. 1:45Sue-Ann Norton says she regularly feeds
45. 1:48fruit to baboons that visit her home.
46. 1:50>> Are they not dangerous? Um they are
47. 1:54they treat you as you treat them.
48. 1:57If you treat them with anger and force,
49. 2:02they come back at you with force. If you
50. 2:05treat them
51. 2:06like a pet, like a cat or a dog, like I
52. 2:08treat them, then we live together in the
53. 2:12you know, in harmony.
54. 2:13>> City officials say the baboons will be
55. 2:15better off if they're confined.
56. 2:17>> These are not wild baboons anymore. They
57. 2:21live in an urban area and what they are
58. 2:23getting, whether we agree
59. 2:26or disagree, they are going to live
60. 2:28their lives better for 30 years.
61. 2:31>> Animal welfare groups say the root of
62. 2:33the problem isn't the baboons, it's
63. 2:36urban encroachment. They argue residents
64. 2:39need to do more to secure their homes,
65. 2:42protect trash, and eliminate easy access
66. 2:44to food.
67. 2:45>> If you are living in an area where there
68. 2:47is wildlife, then you need to live and
69. 2:49coexist with the wildlife.
70. 2:51>> With residents now taking to the streets
71. 2:53in protest, the battle over Cape Town's
72. 2:56baboons comes down to one question.
73. 2:58Can people and wildlife learn to share
74. 3:00the city, or will one have to make way
75. 3:02for the other?
76. 3:04>> Activists in Kathmandu, Nepal held a
77. 3:06silent protest and candle vigil over the
78. 3:09weekend demanding more action from the
79. 3:12world on climate change. The nation is
80. 3:15still reeling from a collapse of a
81. 3:16glacier in late August that triggered
82. 3:19catastrophic flooding. It killed more
83. 3:21than 1,300 people and left thousands
84. 3:25missing. Activists honored those victims
85. 3:27during the event. One demonstrator
86. 3:29talked about the reason he decided to
87. 3:32participate.
88. 3:33>> This is not a protest. We are silently
89. 3:35just
90. 3:36making all the crowd, all the public to
91. 3:38recognize the climate change and how it
92. 3:40is affecting the
93. 3:42Nepal despite its contribution is very
94. 3:45low. Like Nepal is contributing 0.027%
95. 3:49in the carbon emission, global carbon
96. 3:50emission, and we are getting all the you
97. 3:53know climate related hazards and we are
98. 3:57the youth are
99. 3:58here to show the solidarity solidarity
100. 4:01to the people who lost their life in the
101. 4:04Rasuwa Bhotekoshi flood.
102. 4:06>> Time for 10-second trivia. The first
103. 4:09T-Rex fossil was discovered in which US
104. 4:13state? Montana, Wyoming, South Dakota,
105. 4:16or New Mexico?
106. 4:20If you said Montana, put your hands up.
107. 4:22The first [music] T-Rex fossil was
108. 4:24discovered in 1902 in Montana.
109. 4:28In 1905, the dinosaur was officially
110. 4:31named Tyrannosaurus Rex, meaning tyrant
111. 4:34[music] lizard king.
112. 4:37For decades, scientists have debated
113. 4:40whether the T-Rex was more like a
114. 4:42cold-blooded lizard or a warm-blooded
115. 4:45bird. Now, they may finally have their
116. 4:48answer. Researchers at the University of
117. 4:50California studied the chemical makeup
118. 4:53of three fossilized T-Rex teeth and
119. 4:56found that the dinosaur had a body
120. 4:59temperature of about 97°F,
121. 5:02surprisingly close to ours.
122. 5:05That warmer body temperature suggests
123. 5:07T-Rex could generate and maintain its
124. 5:10own body heat. And that could help
125. 5:13explain how this massive predator was
126. 5:15able to live across a huge range of
127. 5:18climates, including places as far north
128. 5:21as what is now Alaska.
129. 5:24So, while T-Rex disappeared about 66
130. 5:26million years ago, scientists are still
131. 5:29finding new clues about how it lived.
132. 5:34Tomorrow marks the autumnal equinox in
133. 5:36the Northern Hemisphere, and many of us
134. 5:39may be noticing that Mother Nature is
135. 5:41starting to show off.
136. 5:43Fall foliage colors are popping with
137. 5:45trees starting to turn brilliant shades
138. 5:48of yellow, red, and orange. But, have
139. 5:51you ever wondered why and how we get
140. 5:54this colorful show each and every year?
141. 5:56Coy and I took a walk outside to discuss
142. 5:58the science behind this dazzling
143. 6:00display.
144. 6:02>> Fall foliage colors are popping with
145. 6:04trees starting to turn brilliant shades
146. 6:06of yellow, red, and orange. Have you
147. 6:09ever wondered why and how the leaves
148. 6:11change colors? Who better to ask than
149. 6:13our CNN meteorologist, our weather
150. 6:15wizard, Allison Chinchar. So great to
151. 6:17see you. Looking fall-tastic today with
152. 6:21your display. Speaking of display, how
153. 6:23do these leaves change color? Why do
154. 6:25they change color? And how do they know
155. 6:26when to start?
156. 6:27>> Right, because sometimes they change a
157. 6:29little bit later in the year versus
158. 6:30others. So, yeah, there's a lot of
159. 6:32factors here, Coy. But, the biggest one
160. 6:34is daylight hours. As the days start to
161. 6:36get shorter and we have less and less
162. 6:37daylight as we head into winter, it's
163. 6:40essentially kind of a cue to them to
164. 6:41stop photosynthesizing. Now,
165. 6:43photosynthesis is basically using the
166. 6:45sunlight to give them food and energy.
167. 6:48But, this process slows incredibly in
168. 6:50the winter months. So, the trees aren't
169. 6:52dying, they're just going dormant.
170. 6:54>> Why do some leaves turn red, like this
171. 6:57one?
172. 6:58>> Right. So, not all trees have the
173. 7:00special gift that allows them to be this
174. 7:02beautiful color. Basically, what they
175. 7:04have inside of them is something called
176. 7:05anthocyanin, and it allows these trees,
177. 7:08when they start to go through that
178. 7:09photosynthesis process in the winter,
179. 7:11when they slow down, they're changing
180. 7:13into this beautiful red or sometimes
181. 7:15even that pretty purple color, all
182. 7:17because they have this special
183. 7:18ingredient. But, you also have to have
184. 7:21the right weather conditions. You have
185. 7:23to make sure you've had enough [music]
186. 7:24water leading up to the fall season, and
187. 7:26also plenty of sunlight.
188. 7:28>> Now, why is it that some trees don't
189. 7:30change colors and nothing [music] falls?
190. 7:32>> Right. So, these are what we refer to as
191. 7:33evergreen, hence the color, trees.
192. 7:36Basically, these trees have evolved so
193. 7:38that they never stop going through the
194. 7:39photosynthesis process. [music] Now, it
195. 7:42slows considerably in the winter, but it
196. 7:45never actually stops, meaning they don't
197. 7:46have to lose their leaves or change
198. 7:48their color.
199. 7:49>> In this warming climate environment that
200. 7:51we're living in we're experiencing
201. 7:53nowadays, how might warming temperatures
202. 7:54around the world affect the changing
203. 7:56colors of the leaves?
204. 7:57>> Right. So, the most obvious answer to
205. 7:59that is the leaves will be falling
206. 8:00[music] off much later into the season
207. 8:03because we're staying warmer longer. If
208. 8:05trees could actually pick their ideal
209. 8:07conditions, it would be for the
210. 8:08temperatures to cool down gradually,
211. 8:10like you [music] and I would probably
212. 8:11pick. But, if temperatures drop too
213. 8:14quick, let's say 30° to 50° in just a
214. 8:16couple of days, trees can go through
215. 8:18what's called shock, which causes them
216. 8:20to just drop their leaves even if they
217. 8:22never ended up fully changing colors.
218. 8:24>> So, why do trees decide to let their
219. 8:27leaves go? Is this like a preservation
220. 8:28thing that something they have to do?
221. 8:30>> It's to really save a lot of the energy
222. 8:32that the tree would use up during the
223. 8:34winter. Many people don't know this, but
224. 8:36leaves take up the vast majority of the
225. 8:38water source that a tree takes [music]
226. 8:40in. So, if it doesn't have its leaves
227. 8:42anymore, it can consolidate a lot of
228. 8:43that energy to get through a rough
229. 8:45winter.
230. 8:46>> Thank you for helping us branch out
231. 8:47today and get to the root of this very
232. 8:50interesting topic.
233. 8:58>> Today's story getting a 10 out of 10, a
234. 9:00Minneapolis training program that aims
235. 9:03to help more women become firefighters.
236. 9:06>> We want to push the women to not just
237. 9:08[music] reach the bar. We want them to
238. 9:10crush glass ceilings. We want them to
239. 9:13show up and be undeniable that they
240. 9:15deserve to be there because we do.
241. 9:17>> According to the National Fire
242. 9:18Protection Association, only 9% of the
243. 9:22nation's firefighters are women. And the
244. 9:24trainers in this program are trying to
245. 9:26fight the stigma that women can't meet
246. 9:29the physical demands.
247. 9:31>> When they call 911, they're calling you
248. 9:32on their worst day and they need you to
249. 9:34come and save them, and you have to be
250. 9:36physically ready for that. Firefighting
251. 9:37is an extremely physical job, and we
252. 9:39must be prepared for that. You're
253. 9:41literally doing this to save a life. You
254. 9:42being in shape and physically prepared
255. 9:45can determine if someone lives or dies.
256. 9:47>> One workout at a time, those women are
257. 9:50proving that the desire to help people
258. 9:53is one of the most heroic actions of
259. 9:55all. All right, superstars, I've got
260. 9:57time for one shout-out today. This goes
261. 10:00to Ms. Little at the Bon Air Juvenile
262. 10:02Correctional Center in Bon Air,
263. 10:04Virginia. Thank you so much for
264. 10:06subscribing to our YouTube channel, and
265. 10:08keep up the good work. I hope you all
266. 10:10have a fantastic day. Coy will be back
267. 10:12with you again tomorrow. I'm Allison
268. 10:14Chinchar, and this is CNN 10.
269. 10:18>> [music]