Do we need more crazy ideas? Most scientists see geoengineering as a highly dangerous response to climate change. But others say desperate times demand desperate measures.
The ‘insane’ plan to save the frozen North
Iced out: Polar bears depend on polar sea ice for their survival, as do seals, their main prey. Glossary
insane - A state of mind that prevents normal behaviour.
Compensate - To give someone something to make up for their loss of something else.
Glaciers - A slowly moving mass of ice formed by snow building up on mountains.
calcium carbonate - a white solid occurring naturally as limestone or chalk rock
sulphur - a bright-yellow coloured non-metal material
Algae - A simple plant that grows in or on water.
Radical - Extreme.
tamper - to make changes that you shouldn't be making