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Does Earth’s atmosphere lose molecules to space?
Earth's atmosphere is constantly moving, spurred on by energizing sunlight, and some move quickly enough to escape the grip of Earth's gravity.
January 25, 2010
Why don’t tree branches grow straight up?
Tree branches provide a way for tree leaves to act as a net for sunlight.
January 21, 2010
Africa vulnerable to abrupt climate change
"In Africa we have a special concern about abrupt climate change," said atmospheric scientist Kerry Cook, "because we know from the records of past climate that it’s possible for climate to change abruptly in this region."
January 18, 2010
Climate models can help restore Everglades
Dr Lall discusses how climate models can be used to save the Florida Everglades, North America’s largest wetland.
January 18, 2010
Role of science in our changing climate
Science will be needed to devise ways to use energy more efficiently to help our climate, and shift to energy sources such as wind, solar, and others.
January 18, 2010
Water vapor has role in global warming
It's correct that water vapor is the most important greenhouse gas, says Dessler, but "it's not correct to think that therefore carbon dioxide is not important."
January 18, 2010
Cats: How long have lived with humans?
Cats and people are depicted together in Egyptian art from nearly 4,000 years ago - but the human-cat relationship may go much farther back.
January 12, 2010
Plastics in ocean biodegrade slowly
He pointed out that plastics have been around for less than 100 years. In that short time span, no group of microorganisms has evolved that is capable of biodegrading plastics.
January 11, 2010
Climate change affecting Earth’s oceans now
"It's vitally urgent that we reduce emissions as fast as possible and prepare to adapt to changes that will be inevitable because of climate change that is already underway," says Lubchenco.
January 11, 2010
Ice ages are the outstanding mystery in Earth sciences
"In many ways, the questions that are still outstanding about what causes ice ages are extremely relevant for also understanding our current situation," says Huybers.
January 11, 2010
