Every gun and bullet sold in the U.S. generates excise taxes to support conservation. But Americans are buying guns now for different reasons than in the past – and increasingly, not for hunting.

Farming shellfish instead of large, predatory fish, is also better for the planet.

It involves a trade-off between seafood production and seabed conservation.

Hard and strong, or bendy and flexible? A cartilaginous skeleton provides advantages in the ocean, but wouldn’t stand up to life on land.

Researchers assessed 45,000 marine species and all the threats known across the planet to find those ocean creatures most at risk.

Researchers assessed 45,000 marine species and all the threats known across the planet to find those ocean creatures most at risk.

The Biden administration is moving to revive mercury limits for coal-fired power plants. A scientist explains mercury’s health risks and the role power plants play.

Certain combinations of genetic material are being conserved through the generations.

To a group of hungry killer whales, a longline fishing boat looks like an all-you-can-eat buffet.