The northern hemisphere is experiencing a much earlier spring due to global warming, causing problems for plants and wildlife as the natural cycle goes out of sync.
Shipping industry - responsible for about 2.5% of global greenhouse gas emissions - is ordered to reduce its climate-damaging CO2 emissions in European waters or face trading charges.
Dramatic increase in ice loss from the Arctic glaciers of Canada’s northernmost archipelago is now a major contributor to sea level rise. Glaciers are home to a quarter of all the Arctic ice.