A video by the World Wildlife Fund WWF: Climate change is one of the greatest threats to wildlife and nature. Call your Senators at 1-800-217-7379 and ask them to support climate legislation on behalf of those who cannot call themselves.

Today, planet Earth is in a new era, the Anthroprocene. Humankind has harnessed and exploited Earth’s resources, changing its surface, devastating populations of wild animals, cutting down trillions of trees and leaving very little of what was “wild.” The enormous loss of biodiversity is not sustainable. How can we create a future in which both people and nature can thrive?

Can planet Earth survive? Can we survive as a species? Changes in population growth could be a key factor to allowing us to prosper and live in harmony with nature once again.

Wild dolphins playing with a plastic bag and a camerawoman. A video by the Wild Dolphin Foundation.

GreenpeaceVideo: In Sydney, between drought and dust storms, the effects of climate change are becoming more visible than ever.

Greentraveller's Richard Hammond shows you some of the loveliest and greenest spots in London, and gives some tips for navigating through the city.

UNICEF Goodwill Ambassador Katy Perry delivers a special weather report on the devastating effects of climate change for the world’s children.

The East Coast of the United States of America stretches from the tropical blue seas and white sand of Florida’s Sunshine State to the Canadian border in the North. We begin our journey in the warm and relaxed islands of the Florida Keys, where modern-day treasure hunters are still at work, hunting for sunken Spanish gold.

When the Fisher family of treasure seekers finally struck it rich, the local authorities tried to claim the bounty for themselves, and the case went to the Supreme Court. We learn how the “Florida Keys” got their name, and how these small outlying islands are linked to the mainland.

The town of Marathon in the Florida Keys is home to a unique hospital dedicated solely to caring for sea turtles. Marine biologist Bette Zirkelbach tells us about the dangers that sea turtles face in the wild. A lifesaving operation takes place, and a turtle is treated for a mysterious viral infection.

The only coral barrier reef in the United States surrounds the Florida Keys archipelago, and has been badly damaged by environmental pressures including ocean warming. The Coral Restoration Foundation is dedicated to its salvation, and in underwater nurseries, new coral is being grown to replenish the reef.

We head northward into the great swampy wilderness of the Florida Everglades. Airboat Captain Jesse Kennon knows his way around these marshes and where to find their most well-known and well-feared inhabitant: the alligator!

Jesse Kennon’s family are the only permanent residents of Coopertown, and he takes on responsibilities as town mayor. A short way further up the coast lies Miami, once another small town, which underwent an almost miraculous growth to become the vibrant tourism, relaxation, and business hub we know today.

By the beaches of South Florida the lifestyle is relaxed, with plenty of time for outdoor activities. We meet Sean Reyngoudt, whose life changed when he lost a leg in an accident as a teenager. But that didn’t stop him becoming a wakeboarding champion and enjoying life to the fullest.

As well as attracting the rich and famous to its golden beaches, Florida’s great climate is also perfect for growing fruit, making the sunshine state one of the biggest producers of oranges in the world. We meet a citrus farmer who shows us some of the harvesting process.