Take a look at this view from Windy Hill on a warm winter day in January. Smog fills Silicon Valley on a mid-January day, as seen from the top of Windy Hill. The PurpleAir app puts numbers to this ...

Scientists still don’t fully understand the health risks of the chemicals. Here’s how they recommend protecting yourself. By Allyson Chiu When Melissa Furlong, an environmental health researcher at ...

Over the last 50 years, the proportion of Americans living in poverty has remained virtually unchanged. In 2023, 11 percent of American’s lived below the poverty line. In 1973, that number was also 11 ...