Following announcements by two UK-based companies, wave power looks set to become an increasingly important renewable energy source. But how long will it be before it is commercially viable and what ecological benefits might it bring?
High costs of offshore wind farms could be reduced through investment in a UK manufacturing base says report, but warns nuclear is no cheap alternative
The Government's much-vaunted ambition for a low-carbon economy could be threatened by shortages in key metals and the environmental cost of developing new mining facilities
