Last week, much of the Midwest and eastern US experienced hazy skies and red sunsets. The cause was smoke transported from the Western US by the jet stream and spread as far as Boston and even Europe.

Wildfires aren't always wild. Many of the most expensive and damaging fires happen in suburban areas, and nearly all blazes in these zones are started by humans.

Two environmental engineers say governments need to do more to protect people from possible water contamination after wildfires.

Wildfire smoke makes it harder for firefighters's bodies to fight off viruses. Social distancing is difficult in that environment, but fire crews are coming up with solutions.

How climate change and other human actions have combined to create conditions for explosive wildfires in California, Oregon and Washington state.

Disaster preparation and evacuation procedures weren't made for social distancing. The pandemic means response decisions are now fraught with contradictions.

Wildfires blanketing several Western cities are creating hazardous health conditions. Don't count on cloth masks to protect your lungs.

Wildfires blanketing several Western cities are creating hazardous health conditions. Don't count on cloth masks to protect your lungs.

Fires that burn the forest burn crops and pastures alike. But farmers in the eastern Amazon are left with few good options.

Buildings aren't the only things at risk in wildfires. Recent disasters in California have left local water system contaminated with toxic chemicals afterward, slowing return and recovery.