The USGS wants to test if butterflies and other insects are being hurt by contaminants, such as those in pesticides. It's seeking specimens from Alabama, Georgia, Kansas, Nebraska, Oklahoma and Texas.
A new government study estimates that at least 45% of the nation's tap water could be contaminated with one or more forms of PFAS. Here's what to do if you're worried about what's in your faucet.
If someone who predicts an earthquake seems to get it right, it's basically like a broken clock that's right twice a day, a USGS seismologist tells NPR.
