What if we cooled the climate with a giant parasol?

Any dermatologist will tell you this.

The best way to protect yourself from the sun's rays and avoid heatstroke is to stay in the shade of a parasol.

The idea of ​​doing the same, but on a global scale, is resurfacing with a new project led by an Israeli scientific team.

Led by physicist Yoram Rozen, from the Technion-Israel Institute of Technology and the Asher Space Research Institute, it proposes deploying an immense sail in orbit in order to create an artificial shadow on the Earth's surface.

Also nicknamed “cosmic umbrella”, the device joins the club of technical and scientific ideas, known as “geoengineering”, whose objective is to intentionally manipulate the weather to change its effects.

In Australia, we are testing the spraying of seawater particles on clouds in order to increase their albedo, their ability to reflect the sun's rays and protect the Great Barrier Reef from possible heat waves.

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