The year 2008 seems like a very long time ago.

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Biden's climate summit highlighted "nature-based solutions," but political and indigenous leaders agree native peoples should lead the way and researchers warn of pitfalls.

A plan to recycle yard and food waste was among several climate measures passed Tuesday, including sustainability planning and a native landscaping policy.

House Bill 1144 allows companies to spill up to five barrels of oil spills and up to 15 barrels of wastewater without reporting them to the state.

Allegheny County proposes new rules to limit industrial and residential air emissions during temperature inversions.

The former LTV Coke Works in Hazelwood is one of the sites under consideration for a manufacturing plant being proposed by Nexii Building Solutions, a Canada-based green technology company.

Invenergy first proposed in 2016 building the 639-megawatt Allegheny Energy Center power plant in Elizabeth Township.

Chinese greenhouse gas emissions in 2019 zipped past the United States and other developed countries combined.
The Manual on Uniform Traffic Control Devices, which lays down the law on U.S. street markings and design, is up for revision. Bike and pedestrian safety advocates want big changes. 
A new study said that limiting warming to 1.5 degrees Celsius could reduce sea level rise from melting ice sheets from about 10 inches to about five by 2100.
Some 100 ozone-depleting CFCs and HCFCs are being phased out by the landmark treaty, but can this evolving accord now save Earth from the HFCs — one of which is a greenhouse gas 12,700 more potent than carbon dioxide.

Proposal to log 'heartbreakingly beautiful' Raush Valley — home to trees up to 1,000 years old — would require building a road through a protected area.

Recent pledges to cut greenhouse gas emissions fail to account for the rich world's historical carbon debt to poorer ones.
A Republican-backed bill to prohibit all future offshore wind development in the state faces an uphill battle, with Democrats in control.
EPA Administrator Michael Regan, marked the transfer of the site to the city, saying, "We know it's not just about the cleanup. It's about what's to come after.'

The hum of diesel engines will be gone, as the community's solar farm is now generating power.

The political commitment to net-zero greenhouse gas emissions, by now almost ironclad, rules out all fossil fuels.

Much of the world's climate fate may depend on a person you've never heard of.
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