Carbon countdown clock: how much of the world's carbon budget have we spent?

The clock marks how long it will take, if the rate of greenhouse gas emissions stays the same, before 2 degrees celsius of warming is likely. The 2015 Paris climate accord seeks to keep warming well below 2 degrees above pre-industrial levels, to prevent the worst effects of climate change.

Here's how The Guardian built the clock. Here's more on Pennsylvania's response to climate change.


Pollution coming from a coal burning power plant.

Wolf’s cap-and-trade proposal takes a step forward

The Democratic governor issued an executive order declaring Pennsylvania would join a regional agreement aimed at reducing greenhouse gas emissions. Not everyone is on board.

By Katie Meyer

Philadelphia Energy Solutions refinery in South Philadelphia. Workers are in the process of neutralizing a highly toxic substance as part of a shut down.

A fire burns at the Philadelphia Energy Solutions refinery hours after a series of early morning explosions at the 150-year-old industrial complex at 3100 W. Passyunk Ave.

Philadelphia proposes banning hydrofluoric acid, a toxic chemical released in refinery explosion

The proposal stems from last summer’s explosion at the Philadelphia Energy Solutions refinery in South Philadelphia.
By Susan Phillips

A well site in Lycoming County, Pa. (file)

US Steel's Clairton Coke Works



A fisherman along the banks of the Susquehanna River. Two senior state environmental officials say there is no link between gas drilling and problems with the river's smallmouth bass population.

Pa. not meeting Chesapeake Bay cleanup goals; Maryland may sue

EPA targeted for not forcing Pa. to meet goals
By Scott LaMar

Governor Tom Wolf delivers his 2020-21 budget address in Harrisburg on Tuesday, February 4, 2020.

Some lawmakers think they can override Wolf’s veto on manufacturing tax break bill

Overrides are rare, and can only happen when two-thirds of the legislature are willing to support a bill against the governor’s explicit wishes. The last one happened a decade ago.

By Katie Meyer

A coal refuse pile from the early 20th century in Fredericktown, Pa. Photo: Reid R. Frazier

Feds lower coal mine cleanup funding for Pa.

Declining coal production, end of one-time funding stream cause $20 million drop
By Reid Frazier

A Range Resources well site in Washington County in 2018.

In Pennsylvania, poll finds registered voters split on whether to ban fracking

Support for a ban strong in cities and suburbs; weak in rural SW Pennsylvania
By Reid Frazier

The proposed PennEast pipeline would pass through the fields of the Christman farm, seen from the intersection of Station Street and Pohopoco Drive in Lehighton.