How Much Starlight Has Been Emitted Since the...

Your adaptive immune system remembers specific germs and fights them really effectively -- but it can sometimes make mistakes and attack your own healthy cells. Learn how the adaptive immune system works (and how it can go wrong) in this episode of BrainStuff.See omnystudio.com/l ...  عرض المزيد

Slime molds are collectives of single-celled organisms that don't have neurons, much less brains, but they can move, solve mazes, and remember where food is located. Learn what we know (and don't know!) about them in this episode of BrainStuff, based on this article: https://scie ...  عرض المزيد

How dark matter was discovered, and what it might be

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Can physicists discover new particles by watching how muons wiggle in magnetic fields?

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Daniel talks about how astronomers can measure or deduce the mass of a star, and why it controls its fate.

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Why can't we travel faster than light? Can we ever reach the stars?

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