A study finds that -- surprise! -- the Twitter world mirrors patterns in our offline world.
A detailed picture of the nearby Homunculus Nebula, the result of a near supernova a century and a half ago
Astronaut John Glenn relaxes on the deck of the USS Noa shortly after returning from his historic flight.
It is very difficult to estimate the ways a new technology can rework society.
NASA's Terra satellite captured a picture of an eddy off the coast of South Africa that is 150 kilometers wide.
An early design for a steam-powered locomotive
Clever and weird inventions that help women take their birth control every day.
World Chess Champion Garry Kasparov makes his first move in his final game of his 1996 match against Deep Blue.
Yes, but only because history is in a constant state of revision.
NASA's Hubble telescope spots an oddity: A black hole whose surrounding stars have been swept away.
A little primer on the images we have of space, and how we get them.
The humble receptacle gets an upgrade.
A NASA satellite captures a bloom of microscopic plants that will feed fish, krill, penguins, and whales in a sea south of New Zealand.
Tech writing from an earlier era.
A few questions for author Rebecca MacKinnon about her new book, Consent of the Networked
On this day in 1899, Congress approved the use of mechanical voting machines for federal elections.
What if our technology isn't the problem? A look at "Digital Sabbaths" and the dangers of holding our gadgets responsible.
Astronauts on board the International Space Station captured the northern lights as the station orbited over the middle of America.
Have you noticed early-blooming flowers? The arrival of unusual bugs or birds? PBS is collecting your observations of the climate's changes.
Scientists think that daily flares coming from the center of the Milky Way are the result of the vaporization of asteroids in a black hole.