There are 13 countries that sit on Earth's equator. Can you get them all in 5 minutes? If so, how fast can you do it?

Grasslands are vast areas of natural vegetation that might include lush green grass running across miles and miles. They are seen as intermediaries between forests at one end and deserts at the other.

In October 1945, science fiction writer Arthur C. Clarke foretold the use of space satellites in an article titled ...