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17 February 2011
Clean water and education could outperform vaccines at reducing Haiti cholera epidemic
Even though the deadly cholera epidemic in Haiti is now spreading more slowly, health officials are still working to prevent as many new cases as possible. Detailed models of the disease’s spread help those in charge of making public health decisions understand the effectiveness of control measures, from vaccines to investments in clean water supply and education.
28 October 2010
Beaches can harbor hidden oil long after spills
Crude oil from a spill can remain trapped for decades under a beach’s surface. A 2001 survey of beaches along Alaska’s Prince William Sound estimated that about 100 tons of oil from the 1989 Exxon Valdez spill remained in the beaches’ lower layers, and much of it is still there, researchers say. A new study of one of those beaches found that the reason the oil becomes trapped in the …
15 October 2010
Population trends, not climate, causing increased flood fatalities in Africa
Guest post by Anne Jefferson, assistant professor at the Department of Geography and Earth Sciences, UNC Charlotte, and science blogger at Highly Allochthonous In August 2009, unusually heavy rains lasting six hours deluged the city of Khartoum in Sudan. Higher, wealthier parts of the city were relatively unaffected, but in the vast shanty towns that surround the city center, people lost their possessions, homes, and lives. Twenty-seven people died, and …
9 August 2010
What role do rivers play in the carbon cycle?
The importance of carbon dioxide as a greenhouse gas in climate change is spurring studies to assess each source where the gas is emitted and each ‘sink’ (like forests and soils) where it is absorbed – and how much carbon comes and goes from each. At the Meeting of the Americas, David Butman of Yale University presented the first estimate of how much carbon enters the atmosphere annually from the rivers and …
GeoSpace is a blog on Earth and space science, managed by AGU’s Public Information staff. The blog features posts by AGU writers and guest contributors on all sorts of relevant science topics, but with a focus on new research and geo and space sciences-related stories that are currently in the news.