There are too many awesome videos out there. I promise not to share them all but, this one that I saw today is too good not to share.
I learned about Vsauce from watching Veritasium. The Vsauce videos tend to be longer, but this one is short and has a lot of amazing science. About halfway through, it explains atomic clocks in simple, understandable language. It also shows why we should be thrilled the earth spins.
Check it out here. It’s ten minutes of wonder and wow. I love it when I discover something new that makes me just a little smarter.