Global Thermostat's pilot plant in Menlo Park, Calif., pulls carbon dioxide from the surrounding air. The next challenge is to find uses for the captured gas.
Courtesy of Global Thermostat
No Free Doughnuts, Even In Space: PayPal is announcing a project with SETI, aiming to solve issues around taking regular people — and commerce — into space. Here, an artist's rendering of a space hotel, from the Space Tourism Society.
John Spencer/Space Tourism Society
An anti-government protester wearing a gas mask uses a cellphone to read the news on social media as demonstrators gather at midnight in Istanbul's Taksim Gezi Park on June 13.
Ozan Kose/AFP/Getty Images
A lettuce thinner manufactured by Ramsay Highlander removes excess seedlings from the field so that others have room to grow. Just one worker is required to operate the machine.
A Jordanian woman surfs the Web at an office in the Amman, Jordan, on Sept. 30, 2009. The country's government is under fire from media activists for blocking hundreds of websites across the kingdom.
Ali Jareki/Reuters /Landov