Estimates suggest that millions of abandoned gas and oil wells may pose a threat to communities across the country, an ABC News investigation finds. 

El Salvador's Congress has approved a law that would lift the country’s seven-year-old ban on mining for metals

A biologist hid 350 audio monitors across Costa Rica’s tropical rainforests to spy on endangered spider monkeys in order to help protect them

More than 3.5 million abandoned oil and gas wells are littered across the United States and an estimated 14 million Americans live within a mile of one of the wells.

California has been given the green light by the U.S. Environmental Protection Agency (EPA) to ban the sale of new gas-powered cars and light trucks by 2035.

The Environmental Protection Agency has granted two requests from California to enforce strict standards for vehicle emissions, including a rule aimed at banning sales of new gasoline-powered cars in the state by 2035

Modern society has a big problem when it comes to plastic -- and it's contributing heavily to pollution and climate change.

A Jersey Shore environmental group says damage from decades of toxic waste dumping at one of America's most notorious pollution sites caused $1 billion worth of damages

Single use items often come with plastic and paper that will eventually be thrown away and sent to a landfill.

The power of the ocean could soon be used to power homes in the U.S. as scientists prepare to test an untapped form of renewable energy.

Texas has the potential to become a major producer of green hydrogen due to its existing energy infrastructure, according to a new study.

More than 17 million people get their drinking water from the Delaware River basin, according to environmental nonprofit American Rivers.

Important bodies of water that supply water to populated regions in the Northeast are drying up due to drought conditions in recent months.

President-elect Donald Trump's second term could bring reform to energy permitting and increased fracking on federal lands.

The United States has seen a significant increase in the use of clean energy over the last few years; however, Chris Wright has claimed otherwise.

Delhi's air-quality index, or AQI, shot up past 1,000 on Monday, more than five times higher than Sarajevo, the second most-polluted major city.

Climate change is decimating the likelihood of survival for a large portion of the world's coral reefs, according to new research.

In the Punjab region of Pakistan, record-high air pollution levels triggered hospitalizations and school closures, as cities remain shrouded in a thick, toxic smog.

Swing state Pennsylvania has one of the largest natural gas deposits in the nation, but residents are concerned about health impacts.

The U.S. is experiencing the driest fall on record, which could potentially impact the quality of upcoming autumn harvests, experts told ABC News.

A thriving ecosystem has been uncovered in the depths of the Pacific Ocean.

The World Wildlife Fund warns that the next five years are "crucial for the future of life on Earth."

The study’s findings revealed declines in “every indicator that tracks the state of nature on a global scale."

As Hurricane Milton barrels toward Florida, piling onto the damage from Hurricane Helene, officials warn of "severe" levels of coastal change.

One of the driest regions on earth is shifting green, as an influx of heavy rainfall causes vegetation to grow in the typically barren landscape.

ABC News' Bob Woodruff takes us on a spectacular expedition around the world and inside the efforts to preserve natural wonders.

Embattled political systems in Latin America make it difficult for conservationists and environmental policymakers to preserve the ecosystem and natural resources.

The globetrotting series kicked off Monday, with correspondent Bob Woodruff shining a spotlight on the fight to protect the planet's most threatened national parks.

An aggressive species of invasive seagrass that has been traversing for more than a century has been detected in the U.S. for the first time.

An environmental group wants NOAA to investigate whether the former presidential candidate violated the Marine Mammal Protection Act.

Melting permafrost in the Arctic is releasing toxic mercury into the water system, potentially impacting the food chain, scientists say.

While a perfectly manicured lawn is part of the American ideal, non-native plants can be expensive to maintain, so many are going local to beautify their yards.

The days of the perfect-looking yard -- often lawns that guzzle copious amounts of water to stay green -- may soon be gone.

Summer is something very precious in England, usually lasting only a few weeks at its peak, and many do whatever they can to enjoy it.

The places human beings spend the most time are among the largest producers of greenhouse gas emissions in the world.

Mining activity could negatively affect the seafloor ecosystem, scientists warn.

Mining conducted on the floors of deep seas could create "dark oxygen" containing metals that could impact the quality of oxygen above water.

A hydrothermal explosion Tuesday morning at Yellowstone National Park sent people running for cover and prompted the closure of an area containing several geysers.

A video shows a geyser in Yellowstone National Park erupting in a hydrothermal explosion right next to tourists on a boardwalk.

Several states, from New York to California, have been forced to close down stretches of their shores due to high levels of bacteria in the water.

Environmental protesters sprayed what appeared to be orange powder paint across part of Britain's Stonehenge on Wednesday.

ABC News Consumer Correspondent Becky Worley puts some options to the test that could be better for the planet and your wallet.

Experts say extra moisture over the past couple of years may be the cause.

A unique population of polar bears is at risk of extinction should ice-free periods continue to get longer, researchers have determined.

Australia's category 5 hurricane in April 2023 killed over 80% of seabirds on Bedout Island.

An "environmental justice population" in Framingham was chosen for the system.

Millions of people around the globe were able to witness the spectacle of lights, thanks to the strongest geomagnetic storm in the last 20 years to hit the U.S.

The disproportionate impacts of climate change on the poorest communities are already affecting pockets of the U.S.

Two teens turned themselves in after being caught on camera dumping trash into the Atlantic Ocean off the coast of Florida. They both face fines and possible jail time.

The first official Arbor Day was celebrated on April 10, 1872, when prizes were offered to communities and individuals who could plant the most trees in a single day.