Canada

British and Canadian firms to work together to improve endurance of tidal technologies and reduce the impact on marine life

More than 100 US and Canadian scientists publish letter saying tar sands crude should be relegated to fuel of last resort, because it causes so much pollution

Analysis from Oil Change International says 30 projects that would have produced 1.6 million barrels of oil a day are on hold

London-based Cubico Sustainable Investment already has $2bn worth of renewable energy and water assets

Research on behalf of the Financial Times shows oil majors have shelved or delayed 26 schemes, including nine tar sands projects

Environmentalists say Harper administration has little chance of meeting the 2030 goal while tar sands expansion continues

Canadian province confirms it will join cap-and-trade market operated by Quebec and California

Canadian city of 600,000 people is the latest to announce it will use only green energy for electricity, transportation, heating and air conditioning within 20 years

President rejects bill approving controversial project, accusing Congress of trying to cut short 'thorough consideration' of the pipeline's potential impacts

Environmental Protection Agency deals blow to tar sands pipeline plans as analysis suggests project would lead to "significant increase" in emissions