05/23/2019 - Six Pittsburgh restaurants recycle oyster shells to help Chesapeake Bay

The Oyster Recovery Partnership is part of an effort to return oyster shells to the Chesapeake Bay to help restore declining habitats.

05/23/2019 - Solar United Neighbors building new power cooperatives in Allegheny County

Solar United Neighbors is holding a series of free meetings around the county in an effort to build cooperative solar power systems.

05/23/2019 - As extinctions loom, biodiversity warnings fail to resonate with governments, media

Ecological collapse and species loss threaten humanity as much as climate change. Conservationists say we're not listening.

05/23/2019 - Eight million salmon killed in a week by sudden surge of algae in Norway

Deaths come weeks after similar incident in Scotland: ‘We’re all pretty worried’

05/23/2019 - Hawksbill turtles paid a high price for beauty

The tortoiseshell trade was a complex system that spanned the globe, and it was worse for hawksbills than previously thought.

05/23/2019 - Farmers testing new fertilizer alternative: bacteria

Farmers across the country are putting a genetically modified bacteria in the ground this spring to help corn plants use naturally occurring nitrogen. The goal is to eventually replace synthetic nitrogen fertilizer.

05/22/2019 - Animal culprit: study points to animal farms as growing contributors to Lake Erie algae

A year-long study says it's likely animal farms in the Maumee River watershed are contributing more nutrients into Lake Erie each year and that, from 2005 to 2018, the number of unregulated farms increased by 40 percent.

05/22/2019 - Houston council seeks grant to help remove toxic exhaust from 30 fire stations

The council gave the fire department the green light to apply for a $2.7 million federal grant that would allow the city to funnel toxic exhaust out of additional fire station bays.

05/22/2019 - Initial test results reveal ‘forever chemicals’ showing up in sludge

The findings are among the topics covered at the first meeting of a task force studying PFAS contamination in Maine.

05/22/2019 - Key West bans Monsanto’s Roundup weed killer on city properties

The Key West City Commission on Tuesday banned the use of glyphosate — the main ingredient in Monsanto’s Roundup — from use on city-owned and city-maintained properties and urged the county to follow suit.