There are thirty-eight cat species in the world, but none of them command the respect and awe of the tiger.
Hundreds of millions of years ago the continents were joined together in a super-continent that scientists call Pangaea. It means “all lands” in Greek. It stretched all the way from the North to the South Pole, but that’s not the way the earth looks now, obviously. What happened? Learn more on this Moment of Science.