Related topics: carbon dioxide

Extreme heat uncovers lost villages, ancient ruins and shipwrecks

Extreme heat this year has triggered wildfires, drought and melting glaciers. Less expectedly, it's also revealed some weird and dark things about our past—shipwrecks, corpses, ghost villages, ornamental gardens and ancient ...

Solving the mystery of frost hiding on Mars

A new study using data from NASA's Mars Odyssey orbiter may explain why Martian frost can be invisible to the naked eye and why dust avalanches appear on some slopes.

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 ...

Dry ice, the unsung hero of the COVID-19 vaccine rollout, explained

Robert Levis dumped chunks of a whitish substance into a beaker of water, and immediately the liquid began frothing and churning like a sorcerer's potion, spewing plumes of fog across the table of his office at Temple University.

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