The Chelyabinsk meteor exploded over Russia with a force of 40 Hiroshima nuclear bombs. Damage stretched for 500 square kilometers, destroying 7,200 building and injuring over 1,400 people in its ...

PBS Nova explained how the Asteriornis, a small prehistoric bird related to geese and ducks, was able to survive the devastating asteroid that wiped out almost every other species on Earth in a ...