Extreme heat and smoke from Canadian wildfires is an issue for more than 100 million in the U.S. so should those in affected areas cancel their outdoor plans for the Fourth of July? Here’s what you need to know and what one expert recommends. ...

Malaria is so rare in the U.S. that it’s considered eradicated, and almost all cases are related to travel to other countries. But a new infection in Cameron County, Texas, and two recently in Florida are considered to be locally acquired. Here’s what that means. ...

Should Floridians be worried about the continued arrival of what is possibly the largest ever sargassum bloom? ...

Mental wellness is impacted by our everyday environment. Recent research indicates that exposure to singing birds may have benefits on one’s mental health. In some cases, bird songs may even offer some mental health benefits to people struggling with depression. ...

This story originally appeared in the Morning Brief email newsletter. Sign up hereto get more stories like this and weekday weather updates from The Weather Channel and our meteorologists. F​or real-time data, check our exclusive The Weather Channel air quality hub. Last week was the from a rash of Canadian wildfires. It set particulate pollution records in Chicago, Detroit and Pittsburgh, among other cities. Now computer forecast models are suggesting a U-shaped “trough” of low pressure will set up next...

At least four cases of locally acquired malaria have been reported in Sarasota County, Florida. None of the cases were associated with travel. Health officials say that indicates it’s being spread by local mosquitoes, the first such cases in the U.S. in 20 years. ...

At a Glance Six cases of locally acquired malaria were reported in Florida in May and June.One was reported in Texas.Such cases are extremely rare in the U.S. Sign up for the Morning Brief email newsletter to get weekday updates from The Weather Channel and our meteorologists. H​ealth officials in Florida continue to monitor for malaria, but the most recent data shows no new cases have popped up this month. T​he latest report from the Florida Department of Health, posted...

At a Glance Some people say their symptoms change with the weather.Experts say it's important to remain active, even when the weather isn't nice.Mental health also plays a role. Sign up for the Morning Brief email newsletterto get weekday updates from The Weather Channel and our meteorologists. When it comes to a connection between weather and arthritis pain, s​cience is murky on the subject. Personal experience is not. "Many people comment on the fact that they can feel changes in...

Though it’s a worst case scenario, a total, long-lasting blackout during a heat wave could be disastrous in Phoenix. In a simulated scenario, more than half of the urban population required hospitalization, according to new research. ...

Toxic fumes from gasoline can enter buildings and homes through busy roads, parking lots and more. A new study suggests that indoor plants can help mitigate the impacts of gasoline on indoor air quality. ...

See what Jeffrey Schlegelmilch, director of the National Center for Disaster Preparedness at Columbia University in New York, had to say about the Canadian wildfire smoke. ...

Breathing in wildfire smoke can cause a host of health problems, even for people far away from the actual fire or who don’t have any chronic heart or lung conditions. The culprit is tiny particulate matter. ...