Blow up asteroids so their dust can block sunlight could help cool the climate, scientists say.

A joint study by Swedish and US scientists concluded that the Ice Age began 470 million years ago on Earth because the collapse of an asteroid created a huge dust cloud that blocked sunlight.

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A study by scientists from Lund University and the Chicago Museum of Natural History,  points out that this “unexpected discovery” could be critical to fighting global warming if carbon dioxide is not reduced.

“Our results for the first time show that such dust has dramatically cooled the Earth,” said Birger Schmitz, a professor of geology and researcher at Lund University.

For more than decade scientists have been discussing various methods for cooling the earth in the event of a major climate disaster. The possibility of placing asteroids in orbit of the Earth, similar to satellites, is currently being studied. They dust could partially obscure sunlight.

“It can be compared to standing in the middle of the living room and tearing up the vacuum cleaner bag, only on a much larger scale,” Schmitz explained.

For 25 years there have been several hypotheses about what led to the Ice Age. The study concludes that a large asteroid disintegrated between Jupiter and Mars 470 million years ago, spreading dust in the solar system and blocking light.

This caused climate change on Earth. Climate zones have evolved into more or less homogeneous climates and gradually increased biodiversity.

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