Radiocarbon dating is a cornerstone of climate and archaeological sciences. But the method is under threat as fossil fuel emissions negate a useful signal from atomic tests.
history
Posted inNews
Evidence of Drought Provides Clues to a Viking Mystery
A persistent drying trend, not plunging temperatures, may have played a role in the unexplained disappearance of Norse settlers from Greenland, according to researchers.
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Vehículos robóticos exploran campos de batalla de la Segunda Guerra Mundial en el océano
El Proyecto Recover usa vehículos autónomos submarinos para identificar, acceder, y captar imágenes de sitios difíciles de alcanzar con restos de la Segunda Guerra Mundial, cerca de las Islas Marianas del Norte.
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Why Did Sunspots Disappear for 70 Years? Nearby Star Holds Clues
Five decades of data revealed a star undergoing a pause in magnetic activity similar to what the Sun experienced almost 400 years ago.
Posted inResearch Spotlights
Climate and Currents Shaped Japan’s Hunter-Gatherer Cultures
New climate records from a peat bog show how two neighboring cultures responded differently to shifts in climate and ocean currents.
Posted inFeatures
Studying Volcanoes through Myths, Legends, & Other Unconventional Data
Studying historic eruptions through a storytelling lens often improves our understanding of and ability to prepare for such events.
Posted inEditors' Highlights
How Hot Was the Summer of 1783 Really? Trees Tell Tales
Volcanoes, heat waves, and tree rings – getting the seasonal story straight – a new study finds that volcanic fog lowered summer tree ring density despite the heat.
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Robotic Vehicles Explore World War II Era Ocean Battlefields
Project Recover used autonomous underwater vehicles to identify, access, and image hard-to-reach World War II wreckage sites near the Northern Mariana Islands.
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The Bumpy Search for Liquid Water at the South Pole of Mars
Studies since 2018 have provided competing explanations of bright radar reflections from the base of the south polar ice cap.
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African World Heritage Sites Jeopardized by Rising Seas
Worsening flooding and erosion threaten places of “outstanding universal value” along the continent’s coastlines.