Balloon near space explores global shade from sunlight
BOULDER, Colo. — A team of scientists from Harvard University is planning the world's first substantial experiment in the stratosphere to see whether an aerosol of tiny reflective particles might help cool the Earth from the gathering solar heat caused by carbon dioxide emissions.
Hope glimmers in the garbage for advanced biofuels
"The history of aviation is marked by people achieving extraordinary things, despite the conventional wisdom of the time telling them it couldn't be done." — Air Transport Action Group
Are advanced biofuels ready for takeoff?
In 2008, a group of airlines came to Boeing Co., the world's largest aerospace company, with a big problem. At that point, the United States was weighing policies to fight climate change. One of them involved cutting emissions from jet fuel.
An old rock could lead to 'next generation' solar cells
After a 170-year delay, the discovery of a strange, metallic-looking rock found in the Ural Mountains in Russia in 1839 has ignited a global technology race for a cheaper, more efficient solar cell. It could seriously disrupt the world's solar market, currently dominated by China.
3M-year-old sediment tells the story of today's climate
In 2009, studies of deep sediment layers from a largely unknown, unexplored lake in the tundra of Russia's eastern Arctic released a flood of new evidence about what global warming had done to the Arctic 3 million years ago.