Solutions Photo by Chi Hung Wong on Unsplash Air pollution: Roadside emissions sensors help Hong Kong clean its air in world first Carbon monoxide and nitrogen oxide pollution have fallen sharply in Hong Kong since it introduced a world-first scheme to detect and repair vehicles with the highest emissions.
Newsletter Wildfire smoke is hurting your skin A first-of-its-kind study links wildfires to skin damage. Here’s what you need to know.
In the crucial swing state of Pennsylvania, new poll finds 90% of respondents support stricter fracking regulations
