* Lonesome George & the Battle for Galapagos (2007)

Documentary about Lonesome George, officially the loneliest animal on the planet until his death in June 2012. He was the last remaining Pinta Island giant tortoise in existence and now his race is extinct. He was an icon of his native Galapagos Islands and symbol of the battle to preserve their unique wildlife. The islands are at a critical point in their history - threatened by illegal fishing, the demands of a booming population and an ever-expanding tourism industry - yet the will within the islanders to protect Galapagos is strong. This is both the personal story of Lonesome George and of the local characters intent on turning around the fortunes of their unique tropical paradise.

* Wild Alien: Python Hunt (2013)

From Green iguanas and Nile monitors, to rock pythons and the biggest nasty of them all — the 12-foot Burmese python — alien invaders have infested the Florida Everglades. And now an elite squad of hunters is fighting back. Patrolling one of the most beautiful and delicate environments on the planet, the Python Hunters are determined to get these invasive species under control. It's a high-stakes, adrenaline pumping conservation mission, and if they fail, one of the most important eco-systems in America may never recover.

* Crocpocalypse (2014)

Much like the saltwater crocodile in Australia, the American crocodile population in Florida is making a comeback. In 1975, the American crocodile and the saltwater crocodile were placed on the endangered species list in Florida due to overhunting and habitat destruction. The American crocodile population in Florida was down to around 200 and in the 30 years since then has grown to over 2,000. Biologists Mark Parry and Joe Wasilewski have been working tirelessly to help the populations in Florida rebound from near extinction. Paleontologist Greg Erickson joins Mark Parry as he explains how he’s helped this species repopulate in Everglades National Park and Joe Wasilewski shows us how an unlikely source of habitat has been a savior for these crocodiles.

* Mission Critical: Amphibian Rescue (2010)

The deadly chytrid fungus is ravaging amphibian populations worldwide, leaving behind a destructive path of incurable disease. Frog species that have survived on our planet for more than 200 million years are facing mass extinction at an alarming rate. But an ambitious new plan involving a modern day Noah's Ark, and Smithsonian biologist Brian Gratwicke, just might be a last hope for these species. Venture deep into the Panamanian jungle as scientists search for these endangered frogs and fight to bring them back from the brink of extinction.