4.2 • 639 Ratings
🗓️ 10 February 2016
⏱️ 3 minutes
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0:00.0 | Understanding the human body is a team effort. That's where the Yachtel group comes in. |
0:05.8 | Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years. |
0:11.0 | Yacold also partners with nature portfolio to advance gut microbiome science through the global grants for gut health, an investigator-led research program. |
0:19.6 | To learn more about Yachtolt, visit yawcult.co. |
0:22.7 | .jp. That's y-A-K-U-L-T.C-O.J-P. When it comes to a guide for your gut, count on Yacult. |
0:33.5 | This is Scientific Americans' 60-second science. I'm Jason Goldman. Got a minute? |
0:39.8 | Chameleons have it easy. |
0:41.6 | If they need to hide from a predator, they just change their appearance and disappear against |
0:46.3 | whatever they happen to be standing on. |
0:48.9 | Surrounded by leaves, turn green. |
0:51.2 | Tree trunk? |
0:52.1 | Brown it is. |
0:53.2 | But Aegean wall lizards have a different strategy. They live on |
0:57.3 | the Greek islands, and instead of changing their appearance, they find a safer spot. That is, |
1:02.9 | they're really good at picking out just the right background to minimize the chances that they'll |
1:07.6 | be spotted by a hungry crow or raptor. That's according to a new study |
1:12.0 | in the journal Scientific Reports. Birds can perceive both visible and ultraviolet light, |
1:18.3 | so researchers snapped regular and UV photos of lizards basking on rocks to figure out how the |
1:24.2 | lizards look to birds. The scientists discovered that the lizard's camouflage |
1:29.1 | is precisely tuned to avian eyeballs, helping them seem to disappear. Lizards with darker backs |
1:35.9 | hang out on darker rocks. Lighter ones choose lighter rocks. It's the first time that wild |
1:41.4 | animals have been recorded explicitly choosing the best background |
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