Officially known as the "MSG Sphere", the structure will cost $1.8 billion and will stand at 112 metres. The venue will house 17,500 seats and offer the world's highest-resolution LED screen with 19,000 x 13,500 pixels. That's about what the sphere will offer to its patrons inside.

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.

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

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...

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...

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.

“If we want to leave our children, grandchildren and future generations a healthy planet, we’ve got to respond now to the challenge of climate change. “ – Robert Redford. From every part of our world, in our own way, we can do something to act on climate. But we need our world leaders to do the s

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

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.

Mexico City is the 5th largest city in the world with population of around approximately 22 million, which classifies Mexico city as a mega city. It is situated in the The Central Mexican Plateau, at 2,240m in elevation. Mexico city is also slowly sinking at a rate of about 10 inches per year! The ...