Scientists have detected Helium-3, a rare primordial gas leaking from Earth's core. This gas is primarily formed in the Nebula as a star comes to life.

When a dog-sized Psittacosaurus was living out its days on Earth, it was probably concerned with mating, eating, and not being killed by other dinosaurs. It would never even have crossed its mind that, 120 million or so years later, scientists would

Even animal experts are stumped at what it could be.