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Home > This Week I Learned > Ep. 26: This week I learned how to tell if a rat is smiling, and more
Podcast: This Week I Learned
Episode:

Ep. 26: This week I learned how to tell if a rat is smiling, and more
Category: Science & Medicine
Duration: 00:08:01
Publish Date: 2016-12-16 06:54:00
Description:

This week I learned how to tell if a rat is smiling, that viruses may be evolving to go easy on women, the science of why you shouldn't go to bed angry, and the bizarre ways movie producers made it snow on their sets in the 1940s.
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