With record drought and warming waters due to climate change, scientists are concerned that the future for Chinook salmon — a critical part of the state’s fishing industry — is in jeopardy in California.

Nearly all sea turtle species have been classified as endangered, with precipitous declines in many populations in recent decades. But new protections, particularly in the U.S. and Central America, are demonstrating that dramatic recovery for these remarkable reptiles is possible.

To slow global warming, tens of trillions of dollars will need to be spent in the coming decades on renewable energy projects. Some banks and governments are issuing green bonds to fund this transformation, but major questions remain as to whether this financing tool will play a game-changing role.

Romania, one of Europe’s poorest nations, badly needs a modern highway system. But conservationists warn that unless the movements of wildlife are accommodated, a planned boom in road construction could threaten one of the continent’s last large brown bear populations.

The waters off the coast of New England are warming more rapidly than almost any other ocean region on earth. Scientists are now studying the resulting ecosystem changes, and their findings could provide a glimpse of the future for many of the world’s coastal communities.

Black lung — a debilitating disease caused by inhaling coal dust — was supposed to be wiped out by a landmark 1969 U.S. mine safety law. But a recent study shows that the worst form of the disease now affects a larger share of Appalachian coal miners than at any time since the early 1970s.

To conservationist Ayana Elizabeth Johnson, getting coastal communities involved in plans to protect their waters is critical for protecting the planet's oceans. In an interview with Yale Environment 360, she talks about her work in one Caribbean island and how it shows how such a strategy can get results.

While it has environmental advantages over other forms of ethanol, cellulosic ethanol has proven difficult to produce at commercial scale. Even as new production facilities come online in the U.S., a variety of economic and market realities suggest the new fuel still has big challenges to overcome.

After decades of sobering news, a prominent conservationist says he is finally finding reason to be optimistic about the future of tropical forests. Consumer pressure on international corporations and new monitoring technology, he says, are helping turn the tide in efforts to save forests from Brazil to Indonesia.

Because utilities can't control when the sun shines or the wind blows, it has been difficult to fully incorporate solar and wind power into the electricity grid. But new technologies designed to store the energy produced by these clean power sources could soon be changing that.

Armed with new high-tech equipment, mining companies are targeting vast areas of the deep ocean for mineral extraction. But with few regulations in place, critics fear such development could threaten seabed ecosystems that scientists say are only now being fully understood.

Often mowed and doused with herbicides, power transmission lines have long been a bane for environmentalists. But that’s changing, as some utilities are starting to manage these areas as potentially valuable corridors for threatened wildlife.

A grim new census of the world’s dwindling wildlife populations should force us to confront a troubling question: Are humans capable of acting in ways that help other species at a cost to themselves?

The rise of U.S. oil and gas production has spurred a dramatic expansion of the nation's pipeline infrastructure. As the lines reach into new communities and affect more property owners, concerns over the environmental impacts are growing.

As negotiators look to next year’s UN climate conference in Paris, there is increasing discussion of a new way forward that does not depend on sweeping international agreements. Some analysts are pointing to Plan B — recasting the climate issue as one of national self-interest rather than global treaties.

A little over 70 miles off the coast of New England, an unusual undersea mountain range, known as Cashes Ledge, rises from the seabed. The area teems with kelp forests, sea sponges, and a wide variety of fish and mollusks — much of it captured by ocean photographer Brian Skerry during dives made earlier this year

The major oil companies in the U.S. have not had to pay a price for the contribution their products make to climate change. But internal accounting by the companies, along with a host of other signs, suggest that may soon change — though the implications of a price on carbon are far from clear.

The prime cod fishing grounds of North America have been depleted or wiped out by overfishing and poor management. But in Arctic waters, Norway and Russia are working cooperatively to sustain a highly productive — and profitable — cod fishery.

The third-place winner of the Yale Environment 360 Video Contest focuses on a herd of bighorn sheep in Montana and features remarkable scenes of lambs as they gambol along the slopes of the northern Rockies. Produced by Jeremy Roberts, the video follows a field biologist as he monitors the sheep and talks about the possible impact of climate change on the animals’ future.

The second-place winner of the Yale Environment 360 Video Contest examines the legacy of pollution in Anniston, Alabama, the former home of a Monsanto chemical factory. Produced by Spenser Gabin, the video tells the story of how PCBs from the Monsanto plant contaminated the town’s waterways and continue to taint the fish that are popular with local anglers.

Some scientists and analysts are touting carbon capture and storage as a necessary tool for avoiding catastrophic climate change. But critics of the technology regard it as simply another way of perpetuating a reliance on fossil fuels.