These giants of the sea are disappearing.

A new discovery raises lost hopes for a rare primate.

Region has some of most diverse, endangered species on planet.

The disguised butterflies were sitting right under researchers noses.

California Common Murre chicks found on island for first time since 1912.

Shifting scenes show more than just sand.

Footage used to help prosecute poachers.

Wildlife Conservation Society looks to protect Canada's woodland caribou.

Herman Posada answers questions in English and Spanish.

Argonaut octopus traps air in paper shell to control buoyancy.

Tracking could help reveal creature's habits, effects of sea ice decline.

First sanctuary to protect whales along migratory route.

Predatory crabs could come to occupy Antarctica's continental shelf ecosystem within two decades.

Hundreds of non-native species thriving at expense of native ecosystems.

Thousands of rare flowering plants still undiscovered.

Follow Titan 3 during its bloom.

The proposed law would stop the sale of shark fin soup.

Cycads were thought to be ancient remains of Age of Dinosaurs.

See where fall's riotous leaves are at their peak.

Why some places have more species than others.

As birds dwindle in New Zealand, plants lose pollination partners and decline too.

Vets suspect two cubs are male and one is female.

Smithsonian National Zoo asks for public's help naming kiwi chick.