tardigrades

Sleep. It's an essential biological function that has long intrigued scientists. Researchers have studied everything from mice to fruit flies in the lab to get a better understanding of what happens when animals sleep — and why so many do it. This week, scientists finally added one piece to the elusive sleep puzzle: How wild chinstrap penguins sleep amid their noisy colony. Turns out, they do it over 10,000 times in seconds-long bursts throughout the day — totaling 11 hours when all is said and done.

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Our colleagues at the TED Radio Hour introduce us to wildlife filmmaker Ariel Waldman. She says the coldest continent is brimming with invisible life that can only be seen through microscopes, including tardigrades (one of Maddie's favorite critters).

Listen to the full TED Radio Hour episode, Through The Looking Glass, here.

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You can burn them, freeze them, shoot them into space – they wouldn’t bat an eyelash, even if they had eyelashes. Go into the microcosmos and learn about the tiny animals that are so astoundingly durable, they can survive conditions not found here on Earth.

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