New research indicates that childhood lead exposure impacts adult mental health. The toxic heavy metal is found across western Pennsylvania drinking water systems, leaving thousands of kids at risk.
EPA released a 3-year "roadmap" to prevent this class of toxic chemicals from being released into the environment and speed up the cleanup process. Advocates say too many unanswered questions remain.
Pittsburgh's sewer system was built in the 1800s for a much smaller city, and it's notorious for overflowing. But there's a new way to capture stormwater, hidden beneath the green grass of two new parks.
It's back to the drawing board for a rule to define which streams, wetlands are protected under the Clean Water Act after a judge found the Trump-era rule risks "serious environmental harm."
