We can't be sure yet which, if any, were made worse by manmade climate change, although a study from researchers in Germany suggests that heatwaves are five times more likely due to current levels of heating.

BBC: Flooding in York

If there's any chance they would change their minds, the approach by Argentina is completely counterproductive.

BBC: William Hague: Argentina bullying Falklands

Yet things might change quickly if any of Europe's big three exchanges were taken over by a rival, or if Euronext really were to benefit from a rise in the pan-European trading of shares.

ECONOMIST: Borsa Italiana

If there is any lingering doubt, look to the recent statement of the Global Roundtable on Climate Change, signed by 100 or so of the world's most significant companies, including Allianz, Bayer, Citigroup, DuPont, General Electric and Volvo.

FORBES: Magazine Article