The rise in global temperatures we are experiencing is not due to human CO2 emissions, but a 1908 meteorite event that changed concentrations of a much more potent greenhouse gas - water vapour, a controversial new theory claims.
Members of a new taskforce set up to help the business community move towards a sustainable future met for the first time this week.
Euro MPs called for a tougher stance on mercury pollution in Europe, pushing for a ban on mercury use in all new thermometers, limits on emissions from coal-powered stations, crematoria, and the safe storage of waste mercury.
Temperatures plunging below -50C are making the clean up of a huge spill in Alaska's North Slope increasingly difficult.
Sorting out queues and using cleaner vehicles at border crossings could help clean the air between the USA and Mexico, according to the EPA.
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