Scientists observe dolphins and whales at play in Hawaiian waters.
Conservation efforts lead scarlet macaws toward a comeback in Guatemala.
As the seasons come and go, plant life and carbon change on Earth.
Worldwide, a diversity of life dwells deep in the dirt.
Biodiversity loss may be encouraging the increase in Lyme disease.
Prey strike back! For ground beetle larvae, predators are on the menu.
Thanks to local people, a Mexican marine park makes a record recovery.
Accidental netting of related dolphins threatens their genetic future.
Coexisting with the powerful Mississippi River is a challenge for flood-prone communities.
High temperatures in 2010 stressed corals around the world.