This is a thin glowing layer of Earth's atmosphere rippling in the wake of a huge thunderstorm.
A California start-up is letting anyone invest in loans to let homeowners go solar.
Released just ahead of the annual Great Wall Marathon, a new toilet-locating mobile phone app hopes to prevent the urine-soaked walls that blemished last year's event.
Britain's parliament is launching an official enquiry into recent heavy smog.
Scientists have already developed technologies that are more effective in cloudy weather. Now they just have to prove it.
In the Netherlands, it's 500 meters of TRON.
What happens when it all melts? Read on.
It’s like The Little Prince, but on earth.
A Facebook page sparks controversy over privacy rights in public spaces.
How "walkable coffee shops" might foster a better sense of community.
Spending more time on the social-networking site is associated with having a worse body image, researchers say.
It's like Mario if the power-ups were crack pipes and the Goombas were cops and reporters.
How stars and spillovers make great cities and great companies.
Six decades of twister tracks shows that some places get hit again and again.
An oceanic model shows how far and wide last night's earthquake-triggered tsunami has traveled.
One of the city-state's biggest websites allows users to upload photos and videos of 'bad' behavior.
Viewed under an electron microscope, smog can look like snowflakes.
The large swath of corn running through the United States "boasts more photosynthetic activity than any other spot on Earth," says NASA.