Wastewater from Pennsylvania’s oil and gas wells is salty and radioactive, and doesn’t suppress dust. Two researchers explain why it keeps ending up on rural roads.

Anna Turns (AT), senior environment editor and Rachael Jolley (RJ), environment editor, showcase climate-friendly ways to transform your living spaces.

You can’t gain power without also gaining enemies, as Machiavelli pointed out.

The gap between rich and poor areas is narrowing, but inequalities remain in some specialities and regions.