claim: “A leading Canadian authority on polar bears, Mitch Taylor, said: ‘We’re  seeing an increase in bears that’s really unprecedented, and in places  where we’re seeing a decrease in the population
evidence: The global average and combined land and ocean surface temperature, show a warming of 0.85 [0.65 to 1.06] °C, in the period 1880 to 2012, based on multiple independently produced datasets.