The year 2014 was the hottest on Earth in 134 years of record-keeping, the National Oceanic and Atmospheric Administration reported last week, continuing a pattern of global warming that is attributed primarily to rising levels of greenhouse gases.
The year 2014 was the hottest on Earth in 134 years of record-keeping, the National Oceanic and Atmospheric Administration reported last week, continuing a pattern of global warming that is attributed primarily to rising levels of greenhouse gases.