What did Newton understand that was such a revolution? Can someone just... explain gravity to me? Let's start with a ...

Hi, everyone, I'm Mwaksy. I'm Greg.Quick question, Greg. Yes. So, I know if I let drop this apple,it will fall because of gravity. Yes.Ooh! Good catch.But what exactly is gravity? Gravity is a ...

Addressing those fears in an interview last fall, Apple CEO Tim Cook insisted that ... that flexibility by freeing its star from gravity. Patrick Kulp is a Business Reporter at Mashable.