Vote 2020 graphic
Everything you need to know about and expect during
the most important election of our lifetimes

Summertime ozone levels in the U.S. could rise 70% by 2050, according to a new study. Warmer temperatures related to climate change are spurring chemical reactions that increase overall levels of ground-level ozone, which can aggravate health problems such as asthma, bronchitis and emphysema.


Share This Story

Get our newsletter



But humans can't cause changes the earth's atmosphere. Increased ozone must be a natural cycle.