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.

Authorities say more than 100 tons of dead fish have been collected in and around the port of Volos, in central Greece, following a mass die-off linked to extreme climate fluctuations

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.

As EV demand slows, advocates say eFuels could make cars that are already on the road greener.

Residents in some places across the U.S. often don’t understand emergency alerts because the instructions are not in their native languages.

A plastics facility accused of polluting a Malaysian river is tied to Operation Clean Sweep, an anti-pollution program promoted by the U.S. plastics industry.

Lori Bergamotto is here to help us celebrate Earth Week with a variety of sustainable upgrades for you and your home from brands like Patagonia, Blueland, Native Shoes and more.

On Thursday, the Environmental Protection Agency announced a suite of new rules aimed at dramatically reducing pollution from coal and natural gas fired power plants.

"The pushback has been fierce and severe," an environmental advocate said.

The fourth round of United Nations Plastics Treaty negotiations will be held in Ottowa, Canada, from April 23-29.

Over 60% of lab-grown diamonds are produced in China and India where 63% and respectively 74% of grid electricity results from coal.

Energy usage of data centers is expected to soar in coming years, experts say, threatening the climate.

A Supreme Court decision that stripped protections from America's wetlands will have reverberating impacts on rivers that supply drinking water all over the U.S.

This is the fourth global bleaching event on record and the second in the last 10 years, according to NOAA.

ABC News' Steve Osunsami travels to Shiloh, Alabama, where Black residents are fighting what they say is apparent environmental injustice, repeatedly causing flooding of their homes.

Scientists will be studying how the solar eclipse will affect plant and animal activity on Earth.

The Environmental Protection Agency announced new vehicle emissions standards for heavy-duty vehicles on Friday.

The study, published in Nature Portfolio Journals, says irrigated agriculture is responsible for 74% of direct human uses of the Colorado River water.

Synthetic turf fields are made with "forever chemicals" perfluoroalkyl and polyfluoroalkyl substances, known as PFAS, according to the EPA.

"GMA" sponsor Michelin recently hosted a Sustainability Summit and continues to innovate with technology for vehicles and for top-tier restaurants.

The U.S. is emitting more methane from oil and gas production than previously thought -- and it's causing billions in environmental damage per year.

Some U.S. states are discharging much more chemical waste from industrial activity into local waterways than others, according to a new analysis.

Researchers have discovered a new method that could encourage the restoration of degraded coral reef populations, which have been declining around the world.

The survival of living beings both on land and sea are dependent on king salmon, the most important species of salmon in the world.

Some of the most established universities in the country are switching to sustainable energy to power their campuses in an effort to meet climate goals.

The silverspot butterfly, a species native to the U.S., is inching closer to extinction, prompting the federal protections as its numbers continue to decline.

Decades of work have turned Anaconda, Montana from one of the most polluted sites in the country into a greener, vibrant community.

First Street Foundation, a non-profit research and technology group that works to define America's climate risk, shared its "Atrocious Air" study on Monday.

What is a day in the life of an Alaskan polar bear like? Researchers recently found out after strapping collar cameras to several bears.

Show a little love to the planet this Valentine's Day by celebrating in more sustainable ways.