North and South America were arranged in nearly the same positions as they are today as far back as 20 million years ago. A significant difference was that they were separated by a deep open channel called the Central American Seaway.
It was one of the Earth's momentous times. Continents collided. Volcanoes erupted. Ocean currents shifted. Species ran amok.
When you think of marsupials, like wallabies and kangaroos, you might believe them to be natives of Australia. But new evidence suggests that is unlikely.
In the early 1990's, ornithologists were stunned to learn about the discovery of poisonous birds.
Where in the world are there bees that couldn't care less about flowers, but sure love to sink their mouths into dead animal carcasses?
What's a fly doing in Antarctica? Find out on this Moment of Science.
Everybody is familiar with El Nino these days. So how come you only hear about it in our lifetimes? Where was El Nino in the Middle Ages?
The song says that Bonnie lies over the ocean, but it also says that she lies over the sea. Based on these lyrics, where is Bonnie? In the song, the words “ocean” and “sea” are used interchangeably to mean any large body of salty water.