In this mailbag episode, Marshall and Lindsay tackle two great questions from listeners about rainbows and how Mars formed. Also, you'll get to hear about Marshall's trip to the Cambridge Science Carnival in Cambridge, MA, and as always your listener reviews. Help Tumble on our q ...Show more
The Science of Nightmares
Do we remember our dreams more than our nightmares? That’s what Lennon wants to know! In this special Tumble Halloween episode, we’re going to a (not-so evil) laboratory where scientists study the science of sleep. That’s where sleep scientist Rebecca Spencer will help us plunge ...Show more
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Baleen whales sing. Toothed whales click. But how and why do they make these musical sounds?Join Molly and co-host Tyler as they dive into the wonderful world of whale sounds. First, they run into Anna Goldfield on her way to audition for a whale choir. She teaches them about the ...Show more
Narwhals are sometimes called “the unicorns of the sea” because of their giant spiral tusks. It turns out that those tusks are actually a big tooth that grows right out of the narwhal’s mouth! One of our listeners wanted to know if narwhals were born with a hole in their head for ...Show more