Large-scale solar projects are enjoying steady growth in California and the southwestern United States. But will shifting government incentives and mandates slow the expansion of this key part of the solar energy industry?

A shortage of "rare earth" metals, used in everything from electric car batteries to solar panels to wind turbines, is hampering the growth of renewable energy technologies. Researchers are now working to find alternatives to these critical elements or better ways to recycle them.

China is engaged in a push to build hydroelectric dams on a scale unprecedented in human history. While being touted for producing lower-emission electricity, these massive dam projects are wreaking havoc on river systems across China and Southeast Asia.

As Bangladesh makes a controversial turn to coal to produce electricity, the construction of a large coal-fired power plant is threatening the fragile ecosystem of the Sundarbans, the world’s largest mangrove forest.

The U.N. climate panel concluded last month that carbon emissions should be capped at a trillion tons, a total the world is rapidly approaching. Now comes the hard part: How will we decide how the remaining emissions are apportioned?

Still reeling from recent financial crises, Iceland is hoping to use its bountiful sources of geothermal and hydroelectric energy to help boost its economy. Among the country’s more ambitious plans is an undersea cable to carry renewably generated electricity to the U.K.

After years of delays and legal battles, several offshore wind projects seem poised to be launched off the U.S. East Coast. But the lack of stable government incentives and tax credits may continue to hobble an industry that already has a strong foothold in Europe.

Australia is the world’s second-largest exporter of coal, thanks to huge markets in China, Japan, and other Asian countries. Environmentalists have been struggling to scale back the nation’s coal boom, but the recent election of a conservative prime minister may keep coal on top.

Researchers at a lab at Oregon State University are using zebrafish to assess the impacts of multiple chemical exposures. Their findings could help lead to a better understanding of how chemicals in the environment and in consumer products affect human health.

Faced with the prospect of a dwindling customer base, some U.S. power companies are seeking to end public subsidies and other incentives for rooftop solar. In Arizona, the issue has sparked a heated public relations battle that could help determine the future of solar in the United States.

Increasingly common in Europe, municipal “waste-to-energy” incinerators are being touted as a green trash-disposal alternative. But critics contend that these large-scale incinerators tend to discourage recycling and lead to greater waste.

Transformed by British sailors in the 19th century, Ascension Island in the South Atlantic has a unique tropical forest consisting almost entirely of alien species. Scientists say that what has happened there challenges some basic assumptions about ecosystems and evolution.

Every U.S. president since Ronald Reagan has backed programs to develop alternative transportation fuels. But there are better ways to foster energy independence and reduce greenhouse gas emissions than using subsidies and mandates to promote politically favored fuels.

A move by New York City to begin collecting food scraps and other organic waste is just the latest example of expanding efforts by municipalities worldwide to recycle large quantities of unused food and slash the amount of material sent to landfills.

Environmental questions about Canada’s massive tar sands development have long centered on greenhouse gas emissions. Now there are mounting concerns about the huge volumes of water used by the oil industry and the impact on the vast Mackenzie River Basin.

With prospects in the U.S. increasingly uncertain, Peabody Energy, the world’s largest private coal company, is expanding its operations abroad. But that strategy could carry significant risks, as coal-consuming powerhouses like China are working to reduce their dependence on the fossil fuel.

An estimated 30 million fish and other creatures are caught annually to supply the home aquarium market, taking a toll on some reef ecosystems. Now conservationists are working to improve the industry by ending destructive practices and encouraging aquaculture.

A backpack that generates electricity? A vest that cools you in a hot tent? As the U.S. military looks to reduce its dependence on fossil fuels, the Marine Corps is leading the way with cutting-edge technology and innovative devices.

New UN projections forecast that world population will hit nearly 11 billion people by 2100, an unsettling prospect that reflects a collective failure to provide women around the world with safe, effective ways to avoid pregnancies they don't intend or want.

Scientists studying a prolonged and severe drought in the southwestern U.S. say that extensive damage done to trees in that region portends what lies in store as other forests worldwide face rising temperatures, diminished rainfall, and devastating fires.

As its director of \"climate justice,\" Jacqueline Patterson is leading the NAACP’s campaign to shut down coal-burning power plants in minority communities. In an interview with Yale Environment 360, she talks about the skepticism she faces from her own constituents.