A new public safety report about sharks was released Wednesday by the Atlantic White Shark Conservancy, the Cape Cod National Seashore and six Outer Cape towns.

Under an experimental U.S. Fish and Wildlife program aimed at preserving the northern spotted owl, over 2400 barred owls have been killed. Researchers hope reducing the competition for habitat and food will give the spotted owl a boost.

Nearly one-third of all Massachusetts lakes and ponds are threatened by invasive or exotic species.

As the climate warms, many U.S. lakes are seeing more algal blooms, low oxygen levels and stressed out fish species. One team in Oregon hopes that pumping oxygen into the water can help.

Walsh is attending a meeting of mayors from around the world to discuss cities' climate solutions.

Derrick Jackson, an environmental writing fellow at the Union of Concerned Scientists, has been following the story for decades.

Boston Mayor Marty Walsh plans to require all newly constructed city-owned buildings to be "net zero" for carbon emissions.

Waters off the coast of Maine are warming faster than 99 percent of the world's oceans. That's forcing whales northward in pursuit of prey, threatening some of their already dwindling populations.

WGBH News Reporter Craig LeMoult said Monday that legislators aren't equipped to respond to new data about ultrafine emissions particles.

Research shows that planes flying in and out of Boston Logan International Airport are releasing harmful air pollution, and it's impacting surrounding communities.