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Ancient people tried to stop rising seas with spears or fiery boulders

Humans 13 February 2020 By Alice Klein The Carnac stones on the northwest coast of FranceHemis/AlamyThe last time humans came up against rising seas due to major global warming, they tried to protect themselves by putting up physical barriers and possibly appealing to divine powers to hold back the water. Following the last glacial maximum…



Humans



13 February 2020

By Alice Klein

New Scientist Default Image

The Carnac stones on the northwest coast of France

Hemis/Alamy

The last time humans came up against rising seas due to major global warming, they tried to protect themselves by putting up physical barriers and possibly appealing to divine powers to hold back the water.

Following the last glacial maximum 21,000 years ago, Earth warmed by about 3 to 5°C over thousands of years, probably due to a slight change in its orbit that increased sunshine exposure. This melted ice sheets that once covered much of North America and northern Europe and raised global seas by about …

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