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.

HEADLINES


The Philadelphia skyline.

Jessica Cutaiar never liked the taste of the well water at her Sellersville home. Now she knows it is contaminated with PFAS, a chemical used in fire retardant foam.

A third of Pa. drinking water samples contained toxic chemicals. The state says there’s ‘no widespread contamination’

Amid federal inaction, there's no consensus on how much of the PFAS class of chemicals is too much.
By Brett Sholtis

A customer totes a shopping bag outside an Ikea store in Conshohocken, Pa., on Tuesday, Feb. 20, 2007. The Swedish retailer, which has its U.S. headquarters in suburban Conshohocken, announced Tuesday that it will start charging customers a nickel for

Detailed view on the newly installed system to filter out PFAS Forever Chemicals at Well #2 of the Horsham Water and Sewer Authority facility in Horsham, Pa., on August 22, 2019..

State testing finds elevated levels of PFAS chemicals in some Pa. drinking water, but only one sample exceeded federal health levels

The results are from the first round of testing by the Department of Environmental Protection.

By Wallace McKelvey/PennLive

More and more school districts are adding propane buses to their fleets and switching from diesel. They cite financial and environmental benefits.

Suburban Pa. school districts see green in propane buses

“Our plan is to eventually phase out diesel and go all propane."
By Dana Bate/WHYY

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