Solar power plane is a key step in a historic effort to one day circle the globe using only energy collected from the sun.
On Monday, a man walks on cracked mud caused by underground water that leaked to the surface during Sunday's 7.2-magnitude earthquake in Mexicali, Mexico.
The Large Hadron Collider at CERN, nagged by overruns and delays, may solve a few mysteries – and pose many more – when it restarts on Feb. 15 and ramps up to unprecedented levels of speed.
Bus engine oil is freezing in Norway, and Ireland is reporting its lowest temps in 50 years. In Britain, which looks like a baby Greenland on satellite images, Prime Minister Gordon Brown is turning into the nation's weather comforter-in-chief.
This aerial photograph, taken Aug. 17, 2007, shows melting glaciers near Ilulissat in Greenland. According to the AFP, Greenland's glaciers are melting at a faster rate than ever, some moving up to 38 yards a day.
The Amazon Rainforest is one of 28 sites picked as finalists in a global poll to name the New Seven Wonders of Nature, conducted by the Swiss nonprofit New7Wonders Foundation. The Brazilian Amazon, pictured here, harbors 40 percent of all remaining tropical rainforest, playing a vital role in global biodiversity and in protecting the earth's climate.
Swiss village where Sherlock Holmes's archenemy meets his end readies for flood of fans May 22.
Tiny Islettes, France, had only one tourist attraction – me.
The film chronicles a real mountain-climbing adventure in Switzerland.