There are hundreds of thousands in the islands and they pose a threat to native species, especially monk seals.

The federal government has determined that another 39 plants and 10 animals warrant protections under the Endangered Species Act.

The iiwi, a bird once commonly found in the islands’ forests, may be listed as threatened under the Endangered Species Act.

The U.S. Army, Navy and Marines made a pitch to conservationists from around the world that they share the same goals. Not everyone is buying it.

A new report highlights challenges and opportunities.

Scientists and Hawaiian Humane Society officials don’t agree on how to address feral cat colonies and their spread of toxoplasmosis.

This North Shore monk seal mom had a tough week fighting off things that could harm her weeks-old pup.

The federal government issued its final rule to help protect 125 species in Hawaii.

Two bills to bar commerce in ivory and other products made from endangered species may succeed this year in the House and Senate.

Facing extinction, the seals now have better-protected places to live around Oahu, the Big Island, Kauai, Maui and Niihau.