A device designed to harness wave power for the generation of electricity is being tested on Loch Ness.
The Gulf of Mexico oil leak raises deep questions over the environmental cost of our "addiction" to oil.
Plans to build a wind farm on the border of Teesside and North Yorkshire are approved.
It is time for a radical reshaping of global climate policy as the current approach is doomed to failure.
Readers of BBC News online react to an oil spill which is approaching the shore of the US Gulf Coast.
Stopping a devastating slick from a damaged oil well in the Gulf of Mexico is only part of the headache currently facing BP.
The US government has approved controversial plans for its first offshore wind farm, which will operate off Cape Cod. Massachusetts residents have been sending their reaction to the decision.
Engineering consultants IKM join forces with one of Ireland's leading wind farm developers.
Construction of the controversial Nord Stream pipeline from Russia to Germany under the Baltic Sea has been officially launched.
A growing number of Americans are readying themselves for a disaster they believe is coming, as the BBC's Madeleine Morris has been finding out.
Westray Island, a remote and unspoilt corner of Britain, is now home to a 67 meter wind turbine which the community hopes will provide environmental and financial benefits.
Comic book illustrators produce artwork giving their take on the push towards greater use of renewable energy.
A plan to use a hydrogen-powered ferry in Bristol Harbour is being considered by the city council.
An online competition in Ireland is asking the public to play their part in helping the nation's stricken economy to get back on track, says the BBC's Stephen Fottrell.
Israel and Syria both tell a conference in Paris they want to use nuclear power to generate electricity.
Key facts, figures and dates
The M4 in Wales is to become a "hydrogen highway" as a way of boosting renewable energy use in transport.
Staffordshire University defends a course in celebrity journalism after an appeal for "Mickey Mouse" degrees to be scrapped.
How are so-called survivalists preparing themselves for the possibility of a crisis in which they live off the land?
Eleven sites across Scotland are identified by enterprise bosses as potential future bases for the country's offshore wind industry.