沉积物中的地球化学标记，包括来自人类和动物粪便的有机分子，帮助科学家们追寻吐蕃帝国的兴衰。
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These Five Craters May Have Birthed a Third of Martian Meteorites
Researchers have homed in on five craters on the Red Planet that are the likely sources of Martian meteorites.
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Black Carbon from Wildfire Smoke Can Double Warming Effects
The findings could help climate models be more accurate about warming projections.
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Model Suggests Undersea Mountains Help Mix the Global Ocean
Seamounts may play a significant role in ocean turbulence and the upwelling of deep waters.
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The Dirt on Biocrusts: Why Scientists Are Working to Save Earth’s Living Skin
Think twice before stepping on that crunchy top layer of soil. It may be a vital ecosystem—one that you can help protect.
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New Map Reveals the Extent of Vegetation in Antarctica
More than 40 square kilometers of vegetation cover Antarctica, including in previously unknown areas. A new map offers fresh insights for conservation amid climate change.
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Some Urban Trees Suffer Under Climate Stress
Heat and drought hit trees in Boston and New York City harder than those in their rural counterparts.
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The Origin of the Moon’s Thin Atmosphere Might Be Tiny Impacts
Minuscule meteoroids slamming into the lunar surface could be kicking up most of the atoms that make up the lunar exosphere.
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From Sandstone Basin to Stonehenge Altar
New research unearths the Scottish origin of Stonehenge’s Altar Stone and its 750-kilometer journey to Salisbury Plain.