The prospect of cheap energy from tabletop nuclear reactions seems as far from reality as ever, with its biggest proponent now under scrutiny

Humans account for a quarter of Earth’s productivity - increasing it by expanding biofuel production could have devastating effects

Warming oceans will reduce the amount of iodine-carbon compounds released into the atmosphere - with variable results

The US president’s recent offer to chair talks on voluntary targets have been hailed as both a step in the right direction, and a stalling tactic

Yes, say ecologists, but not if the current enthusiasm for corn ethanol continues to hold sway

A new analysis suggests that more carbon could be offset by replanting forests and using conventional fossil fuels than can be saved by using biofuels

The deposition of nitrogen from human activities increases the rate at which northern forests grow, but the global effect is as yet unclear

Increases in food production and methane emissions are helping drive climate change, says Ian Roberts

Governments in both the US and Britain are considering the most suitable locations for a new wave of nuclear reactors

It might allow CO from the atmosphere to be used instead of fossil fuels as the source for synthetic carbon compounds and even fuels