An ozone hole that formed over the Arctic has closed, but its recovery most likely can't be tracked to the reduction in pollution due to the coronavirus pandemic.
Last summer, the Tucson area exceeded the ozone standard on four days.
The link between our increasing temperatures and ozone levels remains in dispute but there's growing scientific consensus that both will get worse in the future.
Seeks reimbursement for up to 10,000 Arizonans who bought or leased certain vehicles.
Global warming is certainly a hot subject in the news right now, what with all the oppressive weather we've been having, but it doesn't mean we've solved the myriad other environmental problems facing us.