Robots that slither, crawl, walk, fly — and rock
Today's robots are rapidly gaining skills to help at home or in the factory, from flipping pancakes to slithering behind dangerous machinery. Some can even jam on the guitar.
Antics and artistry of astronaut Chris Hadfield
Canadian spaceflier Chris Hadfield has posted incredible pictures of the world from space. He has also explained how to brush your teeth, shave and clip your nails while weightless.
Art of Science 2013
Click through the top images from Princeton University's Art of Science Competition, which features images of artistic merit created during the course of scientific research.
Month in Space: April 2013
Feast your eyes on an alligator-like mountain range and other curiosities seen from outer space in April 2013.
Our fragile Earth
Images from outer space highlight the fragility — and the resilience — of our beautiful blue planet.
It’s alive! Inside the world’s greenest building
The Bullitt Foundation, whose mission is to safeguard the environment, spent $18.5 million to construct this uniquely sustainable office building.
Return of the cicada
Take a closer look at the curious 17-year life of the flying bug as the East Coast prepares for an invasion.
More Tech / Science slide shows
History of the cellphone
Over the course of 40 years, the cellphone has morphed from a chunky plastic giant to a slender glass slab that doubles up as a computer and camera.
Catch the coolest comets
Cast your eyes on pictures featuring PanSTARRS, Hale-Bopp and other crowd-pleasing comets.
Striking sinkholes: Earth opens up
A look at some of the most amazing sinkholes around the world.
Meteor streaks over Siberia
Click through scenes from Russia's Chelyabinsk region, where a huge meteor fireball set off alarms, injured hundreds of people and caused a factory roof to collapse.
The Columbia shuttle tragedy
Retrace the final, tragic flight of the space shuttle Columbia, from its launch to its catastrophic end on Feb. 1, 2003.
Lights in the sky
Click through stunning images of the auroral displays created by geomagnetic storms.