Human beings have only been able to drill down a third of the way into Earth’s crust. That’s only about 0.3% of the radius of the Earth. So how we know so much about its internal structure?
In this week’s It’s Okay To Be Smart, you’ll earn why the Earth is organized like an onion filled with sizzling magma and metal as hot as the sun, plus how it got to be that way. You’ll also discover how the leftovers from dying stars and a little bit of density put “life” in Earth’s destiny.
Enjoy! If you like the videos we’re making, please consider subscribing and share with your friends!
PS - My t-shirt game is strong in this one, if I do say so myself.
At 1:20 I learned something my 4 courses of choice science courses never taught me (yeah, this geek right here took extra sci classes instead of sports or music… for fun of course!)