After witnessing the 1971 oil spill in San Francisco Bay, John Francis is determined to travel across America on foot—and in silence.

The untold story of bird poaching in Southeast Asia. Forests are emptied on a massive scale, threatening more than 1,500 bird species with extinction. Yet almost nobody knows about it.

As Peru's glaciers vanish, two remote mountain communities merge tradition and science, battling climate change's impact to preserve water sources and ensure sustainable livelihoods.

When young Litha is introduced to the magic of a game reserve by the last remaining ranger, they are ambushed by poachers. In the ensuing battle to save the rhinos, Litha discovers a terrible secret.