Ahead of the COP27 climate talks, South Africa released an $8.5 billion plan to transition to clean energy, paid for by the US and other wealthy countries.
Pennsylvania has mountains of waste coal left over from the coal industry. One company is mining Bitcoin with power plants that burn waste coal. But what's the climate impact?
As residents struggle with damage linked to the Mariner East pipeline, many observe that the Democratic nominee is playing down his environmental bona fides.