Recorded at COP25 in Madrid, Spain on December 6, 2019.
Must-watch video: Despite extreme weather and surging activism, 2019 saw political paralysis on climate
From PBS NewsHour's Miles O'Brien: The past year and crucial year ahead in climate change.
By 2050, there could be more plastic than fish in the sea. Ten tons of plastic are produced every second. Sooner or later, a tenth of that will end up in the oceans. Coca-Cola says it wants to do something about it - but does it really?
Editor's note: This is the fourth story in our series on cancer and air pollution in Southwestern Pennsylvania.
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Hour-long BBC documentary hosted by Sir David Attenborough on the urgent need for action on climate change.
Tensions ran hot Wednesday night during a community meeting about proposed fracking at the site of U.S. Steel's Edgar Thomson Steel mill in Braddock, 10 miles east of downtown Pittsburgh.
Ellen Degeneres sorts through the grande confusion facing Starbucks customers on recycling.
PITTSBURGH—More than a hundred Pittsburgh-area students went on strike today, skipping school to participate in an international day of protests to demand action on climate change.
PITTSBURGH—Three weeks after a Christmas Eve fire at U.S. Steel's Clairton Coke Works plant resulted in levels of sulfur dioxide in the air that exceed Clean Air Act standards for safety, a local physician has observed an increase in asthma exacerbations among elementary school students who live near the plant.
Researchers find people's exposure to PFAS and certain flame retardants could be significantly reduced by opting for healthier building materials and furniture.
Fish exposed to harmful contaminants can pass on health issues such as reproductive problems to future generations that had no direct exposure.
An expanding wood pellet market in the Southeast has fallen short of climate and job goals—instead bringing air pollution, noise and reduced biodiversity in majority Black communities.