What is geoengineering?

Geoengineering aims to tackle climate change by removing CO2 from the air or limiting the sunlight reaching the planeto See all questions and answerso Read about the projectGeoengineering schemes are projects designed to tackle the effects of climate change directly, usually by removing CO2 from the air or limiting the amount of sunlight reaching the planet's surface. Although large-scale geoengineering is still at the concept stage, advocates claim that it may eventually become essential if the world wants to avoid the worst effects of climate change. Critics, by contrast, claim that geoengineering isn't realistic - and may be a distraction from reducing emissions.The first category of scheme - those designed to remove CO2 from the air - include machines (sometimes called "artificial trees") that pull the gas from the atmosphere using plastic polymers. Other proposals seek to increase the amount of CO2 absorbed by the oceans - for example by adding large quantities of lime to the water. Continue reading...