Rescuers who respond to distressed whales and other marine animals say the federal government shutdown is making it more difficult to do their work

Two shark researchers who came face to face with what could be one of the largest great whites ever recorded are using their encounter as an opportunity to push for legislation that would protect sharks in Hawaii

Scientists have used a nearly 300-million-year old fossil skeleton and preserved footprints to create a robot model of prehistoric life

Researchers say a pack of wild canines found frolicking near the beaches of the Texas Gulf Coast carry a substantial amount of red wolf genes

Researchers say there's a new calf among the population of critically endangered killer whales that live in the waters between Washington state and Canada

Research lab revokes honorary titles for Nobel Prize-winning DNA scientist James Watson, who lost his job there in 2007 for expressing racist views

A study authored by a scientist with a Maine lab says microscopic plants are able to thrive beneath the ice that covers the Greenland Sea

The apparent suicide of a Nevada death-row inmate who said he wanted to die and tried several times to kill himself delays in his execution has renewed a debate about his treatment and the death penalty itself

Researchers with an environmental group are labeling as "disturbingly low" the number of western monarch butterflies that migrate along the California coast

Officials say a Nevada death-row inmate who declared he wanted to die, but whose execution was postponed twice, has been found dead in his cell from an apparent hanging