There is overwhelming evidence that humans are experiencing the effects of climate change, says a new report. Unless serious action is taken, this is likely to get worse, with growing risks of floods, food shortages, and threats to human health, warns the United Nation's Intergovernmental Panel on C...

Countries from around the world will meet in a few weeks to try to reach agreement on limiting greenhouse gasses. Previous climate summits have been fraught with disagreement. Will the Paris meeting produce results? Jeffrey Brown speaks to UN climate chief Christiana Figueres about what to expect.

The Intergovernmental Panel on Climate Change has published a report on climate change and the impact it has on remote low lying Pacific Island communities. The Marshall Islands is made up of 29 low lying coral atolls and they are disappearing.

The World is Watching Cities, Now More than Ever
COP21 brought cities into the spotlight. C40 is proud to help shine that light a little brighter. Because cities and mayors are acting now, and we're right beside them as they become necessary leaders in this vital cause.Watch the mayors of Bogotá, C

President Barack Obama addressed the United Nations on climate change at the UN Climate Change Summit on September 23, 2014 in New York.

It's a cautionary tale with a twist. Unless we do more to protect them, coral reefs could become extinct by 2050 due to pollution & climate change. This video was released just ahead of the landmark Copenhagen summit on climate change in order to draw attention to the plight of these fragile ecosyst...

16 climate activists teens and children are petitioning the United Nations with claims that the boy is violating children's rights by not taking action on climate change and global warming. Global climate strike leader Greta Thunberg is among the activists taking climate action against the UN. Thunb...

Climate Change is a Reality!

Exxon research scientists warned about the effects of fossil fuels as early as 1977. Exxon has known about climate change for almost 40 years, despite its efforts to continue to promote fossil fuels and deny its existence throughout the 1990s as a leader of the Global Climate Coalition.

One of the most passionate speeches of the opening day of the U.N. climate change conference in Paris was delivered by Marshall Islands President Christopher Loeak. Thousands of residents from the Marshall Islands have already fled the Pacific island state, becoming climate change refugees because o