Be Smart
Why Are Some Animals Venomous?
Venom comes in all different types, so here's everything you'll ever need to know.
Latest in
Episode 42
Sponsorship
Be Smart
20 Million Year-Old Spider!! Unweaving Spider Silk 🕷
Spider silk is as strong, stretchy, and resilient as even humans’ most advanced creations.
Be Smart
Cuttlefish: Tentacles In Disguise
Now you "sea" them, now you don't! Cuttlefish are more than the chameleons of the sea.
Be Smart
Sunburn, Sweat and the Science of Summer!
A summertime look at why we sweat, why we burn, and why our fingers wrinkle in the pool
Crash Course Astronomy
The Big Bang, Cosmology part 1: Crash Course Astronomy #42
Thanks to observations of galaxy redshifts, we can tell that the universe is EXPANDING!