CLIMATE CHANGE

He's taking questions from reporters as he wraps up nearly a week of meetings with world leaders.

Scientists fear plastic pollution will be overlooked as politicians focus on climate change policy.

One of the most important yet neglected concepts is that absolutely everything can be expressed as a percentage of GDP.

"We need 8 billion people to make this a personal cause," said Robert Moritz, chairman of PricewaterhouseCoopers.

Heavy rain and strong winds are expected to hit the region from Thursday evening.

An interactive look at the warming United States.

Dozens have died as Canada sees a new record - 49.6C (121.3F) - for the third day in a row.

Scientists believe the extreme weather events of recent years are tied to climate change. But the gap between the visceral reality of a slow-moving planetary disaster and the capacity of governments to take significant climate action is only growing.

Climate change jeopardizes Elfstedentocht's future A Dutch meteorologist says climate change puts the future of the Elfstedentocht in jeopardy of ever taking place again.

The annual "State of the Climate" report released recently said 2014 was the warmest year on record. The warmer temperatures are causing the glaciers in Greenland to shrink. Vinita Nair reports.

U.N.: Climate change may be irreversible According to a United Nations panel, evidence shows that Earth is rapidly warming -- and humans are to blame. Significant effects are already being felt around the world. Chip Reid reports.

U.N. panel: Climate change is happening United Nations Secretary-General Ban Ki-moon spoke at the Intergovernmental Panel on Climate Change in Denmark, where the U.N.'s panel on climate science concluded that climate change is almost entirely man's fault.