Is solar radiation management wrong? Billionaires want to recreate volcanic eruptions. It is part of a plan to block the light from the sun and stop climate change. But some think this might be a bad idea.
Quick fix for climate change could be deadly
Brilliant or just bizarre? Some scientists want to recreate the effect of erupting volcanoes. Glossary
Climate change - Long-term shifts in temperatures and weather patterns. Human action is a major cause of climate change.
Solar - To do with the sun.
Bill Gates - Founder and former CEO of Microsoft, the company responsible for popularising household computers in the 80s (and still one of the major global tech companies). His house on the shores of Lake Washington is called Xanadu 2.0. It took seven years to build and is seen as an early example of a smart home.
Support - In favour of.
Extreme - Very great, or beyond what is expected.