A group of scientists opposes “shortening the sun” to fight global warming

A group of scientists opposes “shortening the sun” to fight global warming

One of the solutions proposed to reduce global warming is the action of dropping aerosols into the atmosphere, in order to reduce the ingress of heat and light and, accordingly, to cool the Earth a little.

This “sunshine” solution has a name – geoengineering – but as with its proponents, it also has critics who claim that such a practice would cause “disastrous unintended consequences” on the planet.

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Reducing the incidence of sunlight and heat from the sun – known as “solar geoengineering” – is one of many proposals to contain global warming: in reality, however, “reducing the sun” could have more unpredictable consequences (Photo: courtneyk / iStock )

A group of 60 scientists have signed an open letter to the governments of several first world countries, proposing that they ban any proposed geoengineering, making any attempt to “shrink the sun” illegal.

“We are particularly aware that the practice of solar geoengineering at the planetary level cannot be controlled within the framework of a comprehensive global political system, and does not do justice to the current international political system,” the letter stated. We therefore urge governments and the United Nations to act and exercise immediate and effective political control over the development of any solar geoengineering technology. »

The paper justifies its position by saying that the science of geoengineering has not yet been sufficiently studied and that the systematic reduction of temperature by many countries on the planet will have different consequences for each of them.

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Scientifically speaking, this makes sense: Today, there is no way to say that solar geoengineering will reduce temperatures more or less in certain parts of the planet. It is a fact that global warming affects us as a whole (there is “global” in the name, after all…), but there are countries that are better and less prepared to deal with climate change.

So far, no one has responded to the letter, which was completely published in the scientific journal Climate change threads.

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