I've always wondered about something crazy. That what if all the people in the world, decided on a common time, precise to the millisecond, and together jumped as high as they could... what would happen to this planet for one second? Imagine billions of people jumping getting their feet off the ground, relieving the earth of their weight for just one second. Would the planet spin differently? Would it bounce like a ball for a second? Would the oceans topple over just a bit maybe?