Speed is one of nature’s most lethal weapons, and every continent has an animal built to outrun fear. This video ranks the seven continents by their fastest land animal, showing how each species uses ...

The scientists learned many cool things. Just like birds and insects, the bats adjusted their flight speeds in response to the wind. When wind support increased, the bats flew more slowly. When there ...

The fastest a human has ever been recorded running was Usain Bolt in the 2009 Olympics. Bolt ran the 100-meter dash in an astonishing 9.58 seconds. This equals 27.78 miles per hour, and the record ...

When you think of fast animals, the cheetah usually takes the spotlight—but it’s far from the only speedster in the animal kingdom. Countless creatures on land, in the air, and in the water can reach ...

When considering the fastest animals on Earth, size seems like it should matter. Yet the cheetah, weighing around 50 ...