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Articles on Solar geoengineering

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Cape Town residents queueing to refill water containers at the Newlands Brewery Spring Water Point in January 2018. GettyImages

Dimming the sun could reduce future drought risk in Cape Town – but there’s a catch

Artificially dimming the sun, by injecting reflective particles into the upper atmosphere, could reduce the risk of Day Zero level droughts in Cape Town by more than 90% in the future.
Will the world resort to ‘solar radiation management’ to slow the Earth’s heating? Mark Robinson/flickr

To meet the Paris climate goals, do we need to engineer the climate?

Yes, we blunt the effects of climate change by getting off fossil fuels. But countries' most ambitious targets imply use of climate engineering schemes – and that discussion should be done in public.
Volcanoes produce large amounts of a gas that interacts with air to produce sulfate aerosols, which act as tiny mirrors in the atmosphere to reflect sunlight – and heat. NASA

Can solar geoengineering be part of responsible climate policy?

Blocking the sun by injecting tiny particles in the atmosphere – called solar geoengineering – can lower the Earth's temperature but has some real costs. Economists run the numbers.

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