With climate change, plastic pollution and a potential sixth mass extinction, humanity has made some incredible messes in the world. “We can be good at cleaning up our messes, it’s whether or not we ...

For Earth Day, The Associated Press asked environmental scientists and policy experts to share their top stories about environmental problems that the world fixed. With climate change, plastic ...

With climate change, plastic pollution and a potential sixth mass extinction, humanity has made some incredible messes in the world. But when people, political factions and nations have pulled ...

With climate change, plastic pollution and a potential sixth mass extinction looming, humanity has made some incredible messes in the world. But when people, political factions and nations have pulled ...

Q What's wrong with having an ozone air cleaner in our home? We have one and visitors told us it's dangerous. Is it? A Yes. Health experts do not recommend the use of ozone air cleaners in homes.

After years of failing to meet Clean Air Act standards, metro Phoenix won its argument that nonlocal ozone shouldn't count.