The ‘i’iwi, or scarlet honeycreeper, was widespread until a warming planet constricted its habitat.

Several years ago, the state stopped the infestation of leather mudweed by pulling up 3 million pounds of the algae. Now it’s back.

The risks of leaving Kaimana at the popular beach where she was born outweighed the risks of moving her to a remote location on Oahu, officials said.

Authorities say it may be the first felony conviction under a statute designed to protect the endangered marine mammals.

While Hawaii’s animal rights and environmental groups are sharply divided on solutions, there’s little government support even for steps the two sides agree on.

Climate change is heating the ocean and causing stronger and longer coral bleaching events at Hanauma Bay.

Some corals are starting to rebound on their own and scientists have plans to help other species survive global warming.

A team of researchers sets sail to learn more about the plight of rare dolphins who have been known to share their food with humans.

Wind farm operators have agreed to pay for research into the impact of their facilities on Hawaii’s endangered hoary bat.

A defense attorney’s court filings include the identities of two people who were charged as juveniles in the slaughter.