2013 another unusually warm year across globe, US says

2013 another unusually warm year across globe, US says
Washington (AFP) Jan 21, 2014 - Last year was among a handful of the warmest on record since 1880, according to US government figures out Tuesday that provide more evidence that the planet is heating up. Human-caused pollution and the burning of fossil fuels such as oil and coal have driven up greenhouse gas levels, leading to this long-term rise in temperatures, said the US space agency NASA. Carbon dioxide is at its ... morehttp://www.terradaily.com/reports/2013_another_unusually_warm_year_across_globe_US_says_999.html