Jul 17, 2013 10:46 PM EDT
Big Bang Theory: How Did Dinosaurs Have Sex?
Dinosaurs were the largest animals to ever walk Earth, and they ruled the planet for more than 160 million years. The long-necked Argentinosaurus, with back vertebrae almost two metres high, possibly grew to 30 metres long and weighed up to 80 tonnes. So did the earth really shake for them when they...