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Lab-grown diamonds come with sparkling price tags, but many have cloudy sustainability claims
Lab-created diamonds come with sparkling claims: that they are ethically made by machines running on renewable energy. But many don’t live up to these claims.
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Net zero rec center opens on P Street in Northwest DC
A new recreation center that’s been years in the making opened Thursday in Northwest D.C. Stead Park is the District’s first net zero rec center, meaning it’s designed to not have any negative impact on the environment. The $15 million rec center, which was a gift to the District from the Stead family, has been in the works since...
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DC cuts ribbon on Stead Park Rec Center
D.C. opened a net zero recreation center Thursday. News4’s Mark Segraves reports Stead Park in Northwest will offer all the traditional components of a new rec center.
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Latest EPA assessment shows almost no improvement in river and stream nitrogen pollution
The EPA’s newest assessment of water quality and nutrient pollution in U.S. rivers and streams shows almost no progress on cutting the nitrogen pollution that comes primarily from farm chemical runoff.
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Chesapeake Bay's young oyster population booming
The Maryland Department of Natural Resources has recorded the highest oyster potential in nearly four decades in the Chesapeake Bay.
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How road salt runoff harms DC area waterways
After the first winter storm of 2024, Storm Team4 Meteorologist (and Science Teacher!) Ryan Miller explains where road salt goes and how it’s toxic to the environment.
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Chesapeake Bay Foundation teaches Maryland teens about their environment
The Chesapeake Bay Foundation is teaching teens in the area about protecting the land and water we all share. “Everything helps. Everything matters,” educator Emma Paul told News4’s Megan McGrath.
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Drought-prone California OKs new rules for turning wastewater directly into drinking water
California regulators on Tuesday approved new rules to let water agencies recycle wastewater and put it right back into the pipes that carry drinking water to homes, schools and businesses.
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Hyattsville residents raise concerns about plastic pellets spilled in train derailment
Hyattsville neighbors said they have grown tired of the lack of information from CSX about the derailment and the inconvenient road closures along Baltimore Avenue.
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Residents demand answers 10 days after train derailment in Hyattsville
Neighbors say they are fed up with the inconvenient road closures as questions swirl about the clean up. News4’s Walter Morris asks local leaders what is taking so long.
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Oysters teach Maryland students about protecting the Chesapeake Bay
Montgomery County students learn about the importance of keeping the Chesapeake Bay clean at this three-day camp.
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Outdoor education program teaches students about Chesapeake Bay conservation
An outdoor education program hosted by YMCA Camp Letts teaches Montgomery County students about the importance of conserving the Chesapeake Bay. News4’s Megan McGrath reports.
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A fight over precious groundwater in a rural California town is rooted in carrots
In a remote, dry patch of California farm country, a battle is raging over carrots. Or rather, over the groundwater where they’re growing northwest of Los Angeles.
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UN kicks off Climate Week as phasing out fossil fuels becomes priority
The heat is about to be turned up on fossil fuels, the United States and President Joe Biden.
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Hudson River swimmer completes 315-mile trek
Endurance swimmer Lewis Pugh completed the trek to raise awareness of the need for clean rivers.
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‘Like a Russian roulette': US military firefighters grapple with unknowns of PFAS exposure
Federal research linking “forever chemicals” to testicular cancer confirms what U.S. military personnel long suspected. But as they seek testing for PFAS exposure, many wonder what to do with the results. There’s no medical treatment yet.
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Paper and bamboo straws contain PFAS chemicals more often than plastic straws do, study finds
Some paper and bamboo straws contain so-called “forever chemicals” that could make them a less-than-ideal alternative to plastic, researchers have found.
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China bans seafood from Japan after the Fukushima nuclear plant released wastewater into the sea
Japan’s tsunami-wrecked Fukushima Daiichi nuclear power plant has begun releasing its first batch of treated radioactive water into the Pacific Ocean.
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Conditions are ripe for a global coral bleaching event: ‘Florida is just the tip of the iceberg'
Florida’s coral reefs are getting hit the hardest by marine heatwaves right now, but conditions are ripe for a global coral bleaching event, NOAA says.
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Livestock pollution: EPA denies tougher regulations for large farms
The Biden administration is rejecting a plea from environmentalists to toughen regulation of large livestock farms that release manure and other pollutants into waterways.