In the News
Scientists Say: Hey, Hikers, Stop Stacking Rocks!
Feb. 27 By Melanie Radzicki McManus
Straitjackets Are Still in Use, Just Not Where You Think
Feb. 27 By Adrian Rogers
How the Panama Canal Makes Water Flow Uphill
Feb. 27 By John Donovan
How Patriot Missiles Work
Feb. 27 By Sarah Gleim, Marshall Brain
Ancient Egyptians Believed Cats Had 'Divine Energy'
Feb. 27 By Dave Roos
The Magical Medicine of Bezoars
Feb. 27 By Loraine Fick
Differences Between Rational and Irrational Numbers
Researchers Find First (Potential) Planet Outside the Milky Way
Our Brains Have 'Fingerprints' — And We Can Find Them Fast
How Is Barometric Pressure Measured and Why?
9 Largest Islands in the World
Prim, Proper and Preposterous: The Victorian Etiquette Quiz
The Great London Smog of 1952
How Samurai Work
Oh, Birds! Please Don't Fly Into Our Windows
10 Biggest Sharks in the World
How Wild Animals Survive Freezing Temperatures
The Dark History of Black Cat Superstition
A River Runs Through It
The 9 Longest Rivers in the World: From the Nile to the Congo
When it comes to rivers, longest doesn't necessarily mean biggest, and length can be difficult to determine, so the top spot will always be debated.
Get Your Garden On
Deserts of the World
5 of Earth's Highest Deserts
Not all deserts have sand and they're certainly not all hot. They're just extremely dry and have little vegetation. That means deserts are located all over the planet, including at super-high elevations.