Erin Davis/Axios Visuals Air quality in Salt Lake City is getting worse, according to year-over-year data. Why it matters: Long-term exposure to poor air quality is harmful to our health. By the ...

Not far from where Ceci Carroll lives, a rock-mining company has polluted the air with dust across the San Gabriel Valley, she said. Now, as crews clean charred remains from the Los Angeles wildfires, ...

Congestion pricing began on January 5. One month in, traffic is down, public buses are faster, and transit ridership is up.

Cycling is a full-body workout that improves cardiovascular health, strengthens muscles and enhances mental well-being.