Over the next four years, Saudi Arabia is set to spend a whopping $500 billion dollars to build a futuristic city, 17 times bigger than London and 33 times bigger than New York City. The goal is to build an innovation hub and tourist destination to lead the world in smart city technology and clean e

The future of sea travel could be here -- and it just might help save the planet. A hydrogen-powered ferry that produces zero emissions will soon launch in the San Francisco bay.

A United Nations report warns that climate change and global warming are threatening the world's food supply. CNN's Bill Weir travels to Iowa to see how some American farmer's unusual and innovative measures to continue to grow food as they grapple with lower crop yields.

Hundreds of thousands of demonstrators from around the world united to urge policy makers to take action on climate change ahead of an upcoming meeting at the United Nation on September 23, 2014.

Since 2008, Chicago has been implementing a series of strategies in its Climate Action Plan – an initiative that seeks to reduce the city’s greenhouse gas emissions by 80% below 1990 levels – and in 2019 committed to running the city on 100% renewable energy by 2040.

Katharine Hayhoe, a co-author of the current Assessment (November, 2018) and director of the Climate Science Center at Texas Tech University, said in a Friday tweet that the White House’s claim is “demonstrably false.” The 1,600-page report, which was issued by 13 federal agencies and authored by

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...

Forty world leaders are taking part in a climate change summit hosted by US President Joe Biden. Alice Hill, David M. Rubenstein Senior Fellow for Energy and the Environment at the Council on Foreign Relations, shared her thoughts on the meeting.

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

This is huge. America’s $1.2 trillion infrastructure plan could reshape the country for generations to come.