When it's high in the atmosphere, ozone can protect us from the sun. But ground-level ozone, commonly referred to as smog, is harmful. This pollutant also affects agriculture - how big of a problem is it?
Climate change is a much more visible and advanced threat than it was in 1988, and we could use Reagan's brand of conservative leadership in tackling that problem.
Coronavirus shutdowns have cut pollution, and that’s opened the door to a “giant, global environmental experiment” with potentially far-reaching consequences.
Air pollution, research shows, lowers our ability to fight off infections. It worsens reactions to viruses in people with health challenges like asthma. And it could have a pernicious effect in a pandemic.
