Climate change is a problem that hangs perpetually over the head of humankind.
In an effort to find a solution to this existential issue, some scientists have proposed using geoengineering to “hack” the climate.
Possible geoengineering proposals include injecting sea salt into clouds to increase their brightness and using giant space parasols to block the sun.
However, geoengineering has its critics.
Dr Kevin E Trenberth discussed the pitfalls of geoengineering in his recent newsroom article Hacking planet Earth will not save us from ourselves
In the article Dr Trenberth uses this fable to display ethical problems around who gets to control a hacked climate.
“Once upon a time in an idyllic country, near a small town and a farming community, a rope hung out of the sky. One pull on the rope changed the weather from fine and sunny to cloudy and rainy, and the next pull changed it back. For many years the people cooperated; the farmers used the rains to help grow crops, and the townspeople enjoyed the sunny periods. But there came a time when the townspeople protested the rain and wanted more sunshine. The farmers were concerned about their crops. And so arguments broke out, with a person from the town pulling on the rope, followed quickly by a farmer pulling it again, and they pulled and pulled and . . . broke the rope.”
Nicholas spoke to Dr Trenberth about his article and the implications of pursuing geoengineering as a solution to climate change
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