Climate change

Experiment in New Mexico will try to establish the possibility of cooling the planet by dispersing sulphate aerosols

Flood defence spending needs to rise £20m above inflation each year or four times as many properties may end up at risk

Defra launches Draft Water Bill including plans to allow all businesses to switch suppliers from 2017

New report finds low carbon products and services could adding £20bn to annual GDP by 2015

Awareness of economic opportunity and strong measurement ethos put European cities ahead of the world, NGO reports

It is climate sceptics' most cunning ploy, but environmentalists must fight attempts to equate religion with green progress

Celebrities lead calls for governments to create officially protected polar region, blocking businesses planning to exploit the region

London School of Hygiene & Tropical Medicine warns soaring consumption associated with rising obesity is having huge environmental impact

More than 100 academies urge world leaders to tackle unsustainable population growth and consumption, or risk "catastrophe"

Existing technologies can keep temperature rise below 2°C but governments need to step up investment in renewables