Is solar radiation management wrong? Billionaires back plans to simulate volcanic eruptions to dim the sun. But scientists warn the technology could have unintended consequences.
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.
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.
Stratosphere - A layer of the atmosphere which extends for 31 miles above the Earth’s surface.
UN - United Nations. An intergovernmental organisation based in New York that aims to maintain international peace and security.
CO2 emissions - When a gas is let off from something, like a car, it is an emission. Carbon dioxide, or CO2, is a greenhouse gas that contributes to global warming.
Net zero - When the gases going into the atmosphere are balanced by those being taken out of it.
Geoengineering - Deliberate attempts to intervene in the Earth's natural processes to counteract climate change on a large scale.