China has offered tax rebates to manufacturers of solar power products in an attempt to prop up the struggling sector and also cut pollution levels.

Astronomers and land charities warn that Britain's only Dark Sky Park is being threatened by applications for wind turbines.

US space agency Nasa announces it will launch a 3D printer into space next year to test the feasibility of making spare parts in zero-gravity.

Defence lawyers want forensic evidence to be re-examined in the retrial of Amanda Knox and Raffaele Sollecito over the 2007 murder of Briton Meredith Kercher.

Scientists think they have found the volcano responsible for a huge eruption in AD1257 that perturbed the climate worldwide.