Earth
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- Earth
Breakups maintain barchan dune fields, somehow
Two new theories try to explain how the crescent-shaped sand mountains persist.
- Earth
Millions in China at risk of exposure to arsenic-tainted water
Simulation shows possibly contaminated areas and predicts populations at risk.
- Climate
Flood damage to cost up to $1 trillion per year by 2050
Coastal cities with growing populations will be inundated by sea level rise.
- Climate
Climate change carved canyons in Andes
Erosion came thanks to cooling and more rain, not tectonic activity.
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- Earth
Emissions could fuel global warming for millennia
Climate simulation projects effects of greenhouse gases farther into the future than ever before.
- Earth
Magma can speed to the surface, powering volcanoes
Fast ascent of molten rock could help scientists predict eruptions.
- Climate
Wetter permafrost clings to carbon better
In 12-year lab study, moist soil samples released less greenhouse gas as they warmed.
- Environment
Atomic ant sand
Robb Hermes asked for sand ants to get samples of Trinitite, a material created in the test blasts of the first atomic bomb.
- Earth
Millions of years ago, frozen ice sheet in East Antarctica melted
Warming may have caused ice sheet collapse and huge increase in sea level.
