Down to Earth with Zac Efron

Zac and Darin see how an island rebuilds itself in the aftermath of a deadly hurricane, where survival in the form of sustainability has gone from convenience to necessity.

The Land of Fire and Ice harnesses the Earth's power into clean, renewable energy for the entire country - and local industries prove that a society without waste is within grasp.

Zac and Darin take a wild ride through a once toxic city and see how Brits are turning around their pollution problem with innovative ideas like living walls, urban bees and clean eating.

The City of Lights sparkles even brighter as Zac and Darin take in Earth's most important resource: water. Meanwhile, a town filled with unexplained miracle cures offers the ailing a chance to heal.

Living off the Grid has never been more luxurious than in these high-end permaculture villages. Zac and Darin learn about these unique communities dedicated to a world of self-sufficient food and energy with a positive footprint on the planet.

This small Italian island has a history of more people living into their hundreds than most other spots in the world. Is the secret to longevity their food, wine, family or faith - or is it a mix of all?

Bio-piracy threatens the most precious resource: Food. But scientists and farmers band together to protect the local plants and seeds. See how exporting agriculture threatens the economy and survival of the indigenous people.

While the Malibu fires rage towards Darin's home, he and Zac are deep in the jungle and off the grid uncovering the mysteries of the most powerful and potent plants in the Amazon Rainforest.