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Rewriting the history books: Why the Vikings left Greenland

One of the great mysteries of late medieval history is why did the Norse, who had established successful settlements in southern Greenland in 985, abandon them in the early 15th century? The consensus view has long been that ...

Moon and Mars superoxides for oxygen farming

The dusty faces of the moon and Mars conceal unseen hazards for future explorers. Areas of highly oxidizing material could be sufficiently reactive that they would produce chemical burns on astronauts' unprotected skin or ...

7,000-year-old grains hints at origin of Swiss pile dwellings

No place have researchers found more Neolithic pile dwellings than around the Alps. It is a mystery, however, how this "building boom" came to be. Researchers at the University of Basel have now uncovered new clues and say ...

Each Antarctic tourist effectively melts 83 metric tons of snow

Every summer, as the sea ice surrounding Antarctica retreats, tens of thousands of tourists and scientists flock to the landmass by boat and plane. The remote continent is becoming increasingly accessible—during the 2019-20 ...

Climate change threatens Hadrian's Wall treasures in England

Nineteen hundred years after it was built to keep out barbarian hordes, archaeologists at Hadrian's Wall in northern England are facing a new enemy—climate change, which threatens its vast treasure trove of Roman artefacts.

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