Baby Bird Passwords
An Australian bird thwarts nest invaders by requiring its young to sing a secret call to get fed.
Inside of a Whale
Scientists are just beginning to understand the specialized anatomical features that allow whale songs to propagate underwater.
Birds & Elephant Trees
Migratory gray vireos help elephant trees disperse their seeds in Baja, California.
Baja Spiders
Scientists discover new insects and spiders on an expedition to a little-known area of Baja, California.
Urban Dolphins
California's coastal bottlenose dolphins harbor contaminants in their blubber.
Deep Diving Whales
Beaked whales set the record for the deepest and longest dives of any marine mammals.
Harpy Eagles
Satellites and unmanned aircraft could help shed light on the lives of one of the world’s most elusive eagles.
EVOLUTION & EXTINCTION
EVOLUTION & EXTINCTION - (Encore Presentation) What really happened to Australia's missing megafauna, how carnivores lost their sweet tooth, why lovelorn fruit flies resort to alcohol, strategic miscarriages in monkeys, and a new frog species is discovered in plain sight.
Fisheries Bycatch
A global perspective is needed to cut down on the unintentional casualties of commercial fishing.
Saving Hawaiian Crows
The Hawaiian crow is recovering from a devastating population crash, with help from us.
Elephant Ears
Elephants can discriminate between human voices that pose a threat to their safety and those that do not.
Sea Turtle Tracking
Scientists are using satellites to track the mysterious migrations of young sea turtles.
Baja Bats
A recent expedition to Baja California revealed a surprising number of bats living in abandoned mines.
Beluga Parasite
A parasite called toxoplasma gondii is invading Arctic beluga whale populations thanks to global warming.
A Seal Mystery
Melting sea ice allows marine mammal species that were once isolated to intermingle – and share diseases.
Toxic Seeds & Birds
A Hawaiian bird faces extinction because its favorite food is threatened.
Saving Rock Iguanas
Rock iguanas are the most endangered lizards in the world. But captive breeding is helping bring them back.
Suburban Birds
According to a long-term study, the suburbs may actually be good for bird diversity.
Whales & Oil
The exploitation of natural resources in the Arctic due to melting sea ice has consequences for marine mammals.
Frog Hibernation
Hibernation is the key to getting an endangered frog species to breed in captivity.
Caterpillar Halitosis
A tobacco-eating caterpillar creates the equivalent of smoker's breath to scare off predators.
Mosquito Sweet Tooth
The mosquito’s sweet tooth could be its Achilles’ heel.
Crow Mobbing
Crows form mobs to antagonize, intimidate and scare larger birds away.
The Lyrebird’s Dance
The superb lyrebird of Australia combines its songs with specific dance moves to create an elaborate courtship ritual.