Dust
A speck of dust seems insignificant, but a swarm of it can do everything from generating oxygen to tempering hurricanes to fertilizing the rainforest.
Cochinita
The cochinita pibil is a Mayan pit-roasted pork delicacy, passed down over the centuries and preserved, even after colonization, like a sacred ritual.
Suadero
Urban and nocturnal, the suadero taco is the perfect hangover cure. It's the Mexican cousin to American beef brisket, but with more spice and bite.
Iquitos
Zac boosts his immune system in the Amazon rainforest before climbing a tree, exploring ayahuasca tourism and watching his dinner wriggle on a plate.
London
After a beekeeping stop on a New York City rooftop, Zac checks out London's pollution-reduction efforts, from wall gardening to trash collecting.
Puerto Rico
In the devastating wake of Hurricane Maria, Zac explores sustainability in the region, where he meets chef José Andrés, milks a goat and eats ceviche.
Lima
Following a crash course in apple growing, Zac and Darin head to Peru to delve into potato cryopreservation, biopiracy and the sport of sandboarding.
The Social Dilemma
The technology that connects us also controls us.
Sardinia
On an island that boasts a notable number of centenarians, Zac rethinks his view on nutrition as he ponders how the locals live such long, healthy lives.
Costa Rica
Zac and Darin try out life at a swanky eco-village committed to a small environmental footprint, visit a wildlife refuge and enjoy a zip lining trip.