When the infamous, hairdryer-like Santa Ana winds weaken, the devastating fires in the Greater Los Angeles area can be fought from the air. To do that, firefighting planes and helicopters have dropped ...

Flame retardants like ones used in wildfires are also used in cladding and electrical appliances. Some are toxic for humans ...

There is renewed concern about PFAS or ‘forever’ chemicals in drinking water. Here’s how we keep track of more than 250 ...