The Lassen Pack is now up to at least seven, according to state wildlife officials.
“It was very humbling to be swimming alongside of it,” said the woman who encountered it.
These "iconic wild cats" could soon be gone, warn advocates.
The small Central American nation is showing the world how nature conservation is done.
The centers train disadvantaged kids for careers in public land conservation. Nine of 25 centers and more than 1,000 jobs are on the chopping block.
Between 1992 and 2012, almost 31 million acres of farm and ranch land have been taken out of production across America.
Research finds that human activity may be contributing to the loss of cultural behaviors among chimps.
The female bear was wearing a wildlife study collar, which Owen Renner and his son removed and lied about.
The image, captured by astronauts orbiting the moon 50 years ago, forced us to come to terms with Earth's fragility — and the importance of protecting the environment.
Around 5,000 wolves currently live in the lower 48 states.
Ten out of 11 black rhinos moved to a Kenyan park last month died because of stress and salty drinking water.
Walls and fencing along the border interfere with animals' ability to migrate, mate and find food.
Republican lawmakers are similarly pushing a flurry of bills to overhaul the bedrock conservation law.
Conservationists said this week that they'd successfully created embryos using sperm from long-dead northern white males.
The interior secretary knows David Spady, a longtime conservative media consultant, from Montana and has met with him regularly since taking office.
A tragic reminder to let wild animals be wild.
Straws, plates, cutlery and cotton buds are among the plastic products prohibited under the proposed new rules.
The interior secretary attempts damage control with hunting and fishing groups that didn’t like his fossil fuel focus.