在中国的西北部，沙漠条件保存了长城最偏远的部分。科学家们正在探索着2000年前的建筑材料，以寻找该地区过去气候的迹象。
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Posted inResearch Spotlights
Ancient Pines Could Reveal the Heat of Thousands of Past Seasons
A novel 3D CT scan approach unlocks temperature records preserved in the gnarled wood of bristlecone pines.
Posted inNews
Researchers Find Bacterial Communities Deep Beneath the Atacama
Extremophile microbes exist in the gypsum-rich “fringes” of the driest place on Earth.
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The Crocodile Dundee Site Helping Rewrite the History of Australian Bushfires
A lake made famous by Hollywood has yielded powerful new evidence that humans have conducted controlled burns on the Red Continent for tens of thousands of years.
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Hiroshima Fallout May Offer a Glimpse of the Early Solar System
Bits of glass called Hiroshimaites may have formed by processes similar to those that formed the Sun and the planets.
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Young Salmon in British Columbia Are Getting Bigger
A rediscovered catalog of sockeye scales gave researchers access to century-old fish DNA.
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Oceans May Have Already Seen 1.7°C of Warming
The global warming clock started ticking decades earlier than current estimates assume, according to Caribbean sponges.
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Looking for Climate Clues in China’s Great Wall
Looking for Climate Clues in China’s Great Wall
In northwestern China, desert conditions have preserved the farthest reaches of the Great Wall. Scientists are now exploring 2,000-year-old building materials for signs of the region’s past climate.
Posted inNews
Ostrich Eggshells Trace Namaqualand’s Ancient Rain
The plant-based nitrogen eaten by ostriches and stored in their eggshells was measured by researchers 20,000 years later.
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Mammal Droppings Preserve Human and Climate History on the Tibetan Plateau
Geochemical signatures in sediment, which includes organic molecules from human and animal poop, help scientists track the rise and fall of the Tibetan Empire.