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Global warming 300 million years ago triggered the evolutionary burst which caused lizards to evolve into dinosaurs, scientists revealed today. The new research is focused on the Carboniferous Period, when the supercontinent of Pangea was covered in...
[00:00.00]Unit 2 第二单元 [00:04.44]Long lizard long. [00:07.81]Activity 1 活动一 [00:12.56]Listen,point and learn to say. [00:21.16]a window a door a table a chair [00:50.21]Activity 2 活动二 [00:57.19]Listen and repeat. [01:04.16]Long liz...
This is Scientific American's 60-Second Science, I'm Steve Mirsky. Got a minute? When I got into a cage with a Komodo dragon almost 10 years ago for a story, I had no idea that its skull was so special. Neither did scientists until now. But a report...
This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Every expecting mother gets asked the question: boy or girl? For mammals like us, its an easy call. Two X chromosomes you get pink booties. X and a Y you g...
Nowadays, GEICO is a well-known insurance company. For many years, however, it was unnoticed. Other companies, like Allstate and Farmers, were more popular. Then GEICO tried something different; it got a new ad agency. The owner of the agency, Billy...
