Seasons & Episodes
Invaders
Across the world, plants and animals are silently finding their way into places where they don't belong. These interlope
The One Degree Factor
Dust clouds are building high over the Atlantic. An entire population of caribou is declining, while other species are p
Predators
Around the world, from the forests of Venezuela to Yellowstone’s majestic wilderness to the Caribbean’s coral reefs,
Troubled Waters
Frogs are vanishing in America’s heartland. Canadian beluga whales are mysteriously dying in the Saint Lawrence River.
Dangerous Catch
Plenty of fish in the sea? Not anymore. As wild supplies dwindle, the long hidden ties binding all life to the ocean are
Dirty Secrets
Something is amiss in our global world water supply: Striped bass are succumbing to flesh-eating bacteria in Chesapeake
Popular Cast