In the News
Exploring the Chinese Space Station Project
Sept. 20 By Desiree Bowie, Patrick J. Kiger
When Was the Eiffel Tower Built? Eiffel Tower History and Future
Sept. 14 By Carrie Whitney, Ph.D.
Primary Colors Are Red, Yellow and Blue, Right? Not Exactly
Sept. 13 By Desiree Bowie, Michelle Konstantinovsky
Why Does the Secret Service Protect a President's Adult Children?
Aug. 31 By Dave Roos
How Long Can a Person Safely Hang Upside Down?
Aug. 31 By Jesslyn Shields
6 Wild Cats Still Found Roaming the U.S.
Aug. 29 By Michelle Konstantinovsky
How Riparian Buffers Work to Save Your Local Waterways
11 Basic Math Symbols and How to Use Them
What's the Coldest Place on Earth?
Did the Bicameral Mind Evolve to Create Modern Human Consciousness?
10 of the Worst Prisons in the World
Meet Florence Kelley: Labor Reformer, Abolitionist and Co-founder of the NAACP
Kate Warne: First Female Pinkerton Detective Thwarted Lincoln Assassination Attempt
How Fascism Works
Can You Really Escape an Alligator if You Run in a Zigzag?
Chief Mouser Larry the Cat Now Serves His Fifth British PM
Why Do Dogs (and Cats) Shed So Much?
Is My Black Cat a Bombay Cat?
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.