How has the inside of the Earth stayed as hot as the Sun’s surface for billions of years?
The slice you see cut out of the Earth reveals its core, depicted here in bright yellow. fhm/E+ via Getty...
The slice you see cut out of the Earth reveals its core, depicted here in bright yellow. fhm/E+ via Getty...
The majority of children who stutter will spontaneously recover from it without intervention, but some 20% of people do not....
Your zodiac sign – like Sagittarius, the archer – might be in the stars, but your future isn’t. scaliger/iStock via...
Making a book takes lots of brainstorming and writing, but there are many steps to printing it, too. sykono/iStock via...
The TV in your home is very different from the television sets of just a few years ago. moodboard/Image Source...
Emotions can get in the way of knowing what’s true. Elva Etienne/Moment via Getty Images Bob Britten, West Virginia University...
How a Female Erection Works - In this video, Jonathan from the Institute of Human Anatomy discusses how a female...
Something people today have in common with civilizations past: a love of music. peepo/E+ via Getty Images Laura Dallman, University...
Cash is pretty convenient. Dilok Klaisataporn/EyeEm via Getty Images M. Saif Mehkari, University of Richmond Curious Kids is a series...
Walking vertically – or even upside down – is a piece of cake for ants. pecchio/iStock via Getty Images Plus...
Mosquitoes need to feed on blood in order to reproduce. But how do they choose whom to feed on? boonchai...
Humans are the only animals that express their thoughts in full sentences. Oliver Rossi/DigitalVision via Getty Images Richard Futrell, University...
A great hammerhead shark’s two eyes can be 3 feet apart on opposite sides of its skull. Ken Kiefer 2/Image...
A nanographene molecule imaged by noncontact atomic force microscopy. Patrik Tschudin/gross3HR/Wikimedia Commons, CC BY Christine Helms, University of Richmond Curious...
The core of education is to enable young learners to be kind, giving members of society. David Brewster/Star Tribune via...
The Moon often looks enormous when it first rises because of what is known as the Moon illusion. Roadcrusher/Wikimedia Commons,...
Plastic trash accumulates in trees and shrubs along the Los Angeles River. Citizen of the Planet/Education Images/Universal Images Group via...
Where was the world’s first zoo? Interior view of Polito’s Royal Menagerie, Exeter Change, Strand, Westminster, London, 1812. Heritage Images/Hulton Archives...
Don’t call them tentacles: An octopus has eight arms. TheSP4N1SH/iStock via Getty Images Plus Erin Spencer, Florida International University and...
What do tornadoes look like on the inside? A tornado in Turkey, Texas. Jana Houser, CC BY-ND Jana Houser, Ohio University...
Is it possible to heal the damage we have already done to the Earth? The Earth viewed from the Apollo 8...
Murmurations can have as many as 750,000 birds flying in unison. mikedabell/iStock via Getty Images Tom Langen, Clarkson University Why...
Deer have antlers, walruses have tusks – here’s why so few birds have weapons of their own There’s plenty of aggression...