Hearing "Code Brown" at Walmart can be confusing, but here's what the store code means and how employees should respond to it ...

Major League Baseball is restricting iPad usage in dugouts to prevent artificial intelligence from influencing decisions.

A maroon Air Quality Index indicates a health warning of emergency conditions, as everyone is likely to be affected.

Maryland is under a Code Purple Air Quality Alert today, as smoke from several Canadian wildfires creates hazy and unhealthy conditions.

What are "Code Red" and "Code Purple" air quality alerts? The Air Quality Index has six color-coded categories, ranging from ...

Philadelphia Health Commissioner Dr. Palak Raval-Nelson says some forecasts say a return to Code Purple is possible Friday ...

Philadelphia has declared a Code Purple Air Quality alert on Friday, as wildfire smoke from Canada continues to blanket the ...

Maryland is under a Code Red air quality alert as wildfire smoke moves into the region, with Code Purple conditions expected ...

Wildfire smoke from Canada and Minnesota has led to a Code Purple alert for Pennsylvania on July 17. See the air quality map.

Air quality alerts can change quickly during wildfire smoke events. Here’s what Code Orange, Code Red, Code Purple and Code ...

The heat isn’t the only ongoing atmospheric problem, meteorologically speaking.

The Lincoln Memorial Reflecting Pool's new liner, once dubbed “American flag blue” by President Donald Trump, has faded to a ...