In between getting an up-close look at Iceland's renewable energy efforts, Zac soaks in a spa with D...

Before heading to Paris to learn about its tap water system, Zac joins pal Anna Kendrick for a lesso...

Zac and Darin try out life at a swanky eco-village committed to a small environmental footprint, vis...

On an island that boasts a notable number of centenarians, Zac rethinks his view on nutrition as he...

Following a crash course in apple growing, Zac and Darin head to Peru to delve into potato cryoprese...

In the devastating wake of Hurricane Maria, Zac explores sustainability in the region, where he meet...

After a beekeeping stop on a New York City rooftop, Zac checks out London's pollution-reduction effo...

Zac boosts his immune system in the Amazon rainforest before climbing a tree, exploring ayahuasca to...

From Sydney to the Greater Blue Mountains, Zac and Darin meet with leading eco-warriors to learn abo...

Zac and Darin get down and dirty as they explore a natural approach to farming through regenerative...

Along the coastline, Zac and Darin take a deep dive into the coral reef restoration techniques suppo...

Zac and Darin test their cooking skills in Melbourne before heading to the Torres Strait Islands to...

Searching for ways to minimize their carbon footprint, Zac and Darin visit a self-sustaining home an...

In the aftermath of a devastating bushfire season, Zac and Darin learn about efforts to rehabilitate...

Leaders and representatives of Aboriginal communities show Zac and Darin how Indigenous cultures liv...

Eco-innovators introduce Zac and Darin to unique and cost-effective ways to address complex problems...