national bureau of economic research

The National Bureau of Economic Research announced Monday that the U.S. economy officially entered a recession in February. 

Wildfire smoke crosses the U.S. on jetstream
NASA

For much of the last decade, air pollution was decreasing. But it’s now on the rise, particularly in the West.

That’s according to a recent study by the National Bureau of Economic Research. It found that between 2016 and 2018, the levels of fine particulate matter increased 11.5% in the West. California's been impacted the most.