Weekend Reading: Nail Polish Is Linked to Smog in L.A.

Hi readers, Last week, we went on a refreshing 3-hour hike to a waterfall led by a local 79-year-old Nicaraguan man named Chico. Chico fairly skipped up the mountain and always had a smile on his face. Our other guide, Freddy, from Matagalpa Tours, explained that all the local men...