Why Do We Find Symmetry So Pleasing?

We know rhubarb as a tart fruit that looks like pink celery, but it also has a bulbous underground storage unit that was used medicinally for millennia -- and lets it grow in complete darkness. Learn about the pie plant (and how rhizomes work) in this episode of BrainStuff, based ...  Show more

This marine bird carries the color of the ocean in its webbed feet, was named after an insult, and uses its excrement in creative ways. Learn about the blue-footed booby in today's episode of BrainStuff, based on this article: https://animals.howstuffworks.com/birds/blue-footed-b ...  Show more

How do we know the shape of our galaxy, since we're stuck in the middle of it?

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We know it exists but what is it and how can we see it?

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How can we tell if what we see is real or simulated? Does it matter?

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What does it mean for gravity to make waves? How do we see them?

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