If You're Still Unsure Who to Vote For, These Two Simple Charts Could Help You Decide We Barely Caught a Break From Record-Setting Heat Last Month. Meanwhile, a U.N. Report Pleads, "No More Hot Air, ...

Narrator: 4 and a half billion years ago, clouds of cosmic dust and gas which were orbiting the Sun collided into one another, creating the Earth, our planet, the home of mankind. It spins at 1000 ...

How old is Earth? Our planet's age is known from a variety of sources, from rocks on our own planet to ones from the moon.