Which creates a greater risk a few percent of increasing ultraviolet radiation (that is equivalent to moving from Washington DC to Richmond, Virginia) or removing (at least) 90% of your clothes and lying in the sun on purpose?

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It is therefore likely that the addition of sulphate to the stratosphere would result in a loss of ozone, and thus in more ultraviolet radiation getting through.

ECONOMIST: Geoengineering

Special paints are needed to protect the airframe, over a wide range of temperatures, from wind, weather, ultraviolet radiation and exhaust fumes.

ECONOMIST: It’s a wrap | The

The result is a material that is not only waterproof but is able to block out UV radiation from the sun to such an extent that it would rate a Ultraviolet Protection Factor (UPF) of 101.15 if the chart went that high.

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