When the Dinosaurs were Alive, there were 370 days

Here's a brain-melter for your Tuesday: A T-Rex never experienced a 365-day year. Because when dinosaurs were alive, a year had 370 days. Why?

The Earth's spin is slowing down thanks to the Moon's gravity. Back then, days were shorter-about 23.5 hours - so more of them could fit into one trip around the sun. The planet was younger, faster, and wilder. Let that sink in: the very rhythm of time itself has changed.