Summary: You might be spending the long weekend relaxing with family, paying respect to fallen servicemembers, or getting outside. But if you're enjoying a national park this weekend, maybe think twice about pulling out your smartphone. 2016 was the third record-breaking year in a row for the National Park Service, but all that extra traffic from selfie-snapping tourists can harm the places they visit. Plus: What's at stake of the U.S. pulls out of the Paris climate agreement. Then: California's drought has all but ended, but some wells are still dry, forcing some of the state's poorest people to pay a premium on water.
