Evidence my 14yr old daughter is geek-literate: In lieu of OK, one might type K while texting. She instead typed "Potassium".
Neil deGrasse TysonThree and a half million years ago our ancestors - yours and mine - left these traces [indicates footprints]. We stood up and parted ways from them. Once we were standing on two feet, our eyes were no longer fixated on the ground. Now, we were free to look up and wonder.
Neil deGrasse TysonWe only recently figured out the origin of our own moon. And we have some idea of how the Sun and Earth formed, but that's only because modern telescopes empower us to see other stars and planets freshly hatched within gas clouds across the galaxy. As for the origin of life itself, the transition from inanimate molecules to what any of us would call life remains one of the great frontiers of biology.
Neil deGrasse Tyson