Earth
- Health & Medicine
2012 AAAS Meeting
Highlights from the American Association for the Advancement of Science annual meeting in Vancouver, February 16-20.
- Climate
Carbon dioxide breaking down marine ecosystems
Scientists capitalize on 'natural’ experiment to chronicle how ecosystems will change as oceans continue to acidify.
- Humans
Oceans set stage for human evolution
Temperature changes off the coast dried out East Africa and allowed grasslands to spread starting around 2 million years ago.
- Earth
Natural gas wells leakier than believed
Measurements at Colorado site show methane releases are twice as high as previously estimated.
- Humans
Food exports can drain arid regions
Many dry regions ‘export’ large amounts of water in the form of agricultural products.
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- Earth
BPA fosters diabetes-promoting changes
Exposures typical of the general public are enough to alter insulin secretion.
- Humans
Numbers warn of looming collapses
Mathematical tools help researchers predict when systems are about to change dramatically.
- Animals
Classic sooty-moth tale bolstered by new results
A scientist’s six-year backyard experiment strengthens the scenario for evolutionary changes due to industrial pollution.
- Earth
Little Ice Age began with a bang
Frozen moss suggests climate cooling kicked off fast, possibly with help from volcanic eruptions.
- Earth
Some corals like it hot
Western Australian reefs are faring better than their eastern counterparts, at least for now.
- Earth
Big volcanoes wake up fast
Crystal chemistry suggests magma changes quickly before a huge eruption.
