Unexpected wildfire emission impacts air quality worldwide

In lab studies of wildfire, nitrous acid seems like a minor actor, often underrepresented in atmospheric models. But in the real-world atmosphere, during wildfires, the chemical plays a leading role—spiking to levels significantly ...

FDA limits some antibiotics in livestock

(AP) -- The Food and Drug Administration on Wednesday ordered farmers to limit the use of a type of antibiotics they give livestock because it could make people more resistant to a key antibiotic that can save lives, encouraging ...