Scientists monitoring the Earth's climate and environment have delivered a cascade of grim news this year, adding a sense of urgency to UN talks on how best to draw down the greenhouse gases that drive global warming.
Some impacts of global warming – such as sea level rise and coastal flooding – are already locked in and unavoidable, according to a major research project.
On December 12, 2015, 195 countries gathered in the French capital to conclude the first truly universal climate treaty, the Paris Agreement, aimed at preventing worst-case-scenario global warming.
The Trump administration is "committed" to limiting greenhouse gas emissions, but in ways that do not threaten energy security or market competitiveness, a US official told a UN climate conference in Bonn Thursday.
On a dreary November morning, a small party of visitors from around the world boards a boat for an hour-long ride around what was once one of the most polluted waters in the Ruhr valley.