A start-up in the US claims to have devised a way of reducing diesel engine pollutants by almost 50%.
As the UK announces a new Energy Bill, investors call for a clearer picture of fuel subsidies.
Software capable of predicting the size and strength of waves could help double the amount of renewable power taken from the sea, engineers believe.
The Saphonian turbine is more efficient, quieter and safer for birds, its makers claim. Could it represent the future of wind energy?
Microscopic diamonds could hold the key to tackling tough stains at low temperatures, scientists at Proctor and Gamble believe.
Waste heat from a BioLite HomeStove can help provide cheap, clean electricity. But will it prove a hit with cooks across the developing world?
Technology drawn from LEDs is being developed by Panasonic to harvest energy from light with record efficiency. Could this be used to convert carbon dioxide emitted by power plants?
Thanks to a new carbon nanotube-based system, these PV panels can follow the sun's movement without drawing on the energy they harvest.
Among the obstacles in the way of the triumph of renewable energy, one stands out: the lack of cheap, efficient means to store power. Now, it could just be starting to crumble. Matt Scotland and Caspar Henderson report.
The automaker is extracting rare earth metals from used car batteries at a new facility in Japan.
Stimulating and very interesting.
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