In science news this week: Bringing sea otters back to San Francisco Bay; 100 years of tiny seashells reveal alarming trend threatening West Coast seafood; A milestone: Earthquake early warning system sends first public alert to smartphones in California; Too Hot For Company: Warm Temperatures Break Up Smelt Shoals; Salmon lose diversity in managed rivers, reducing resilience to environmental change; The ferns of dripping springs; Sustainable sand gives pollution a one-two punch; Let It Be: Why We Must Save Alaska’s … Continue reading SCIENCE NEWS: Bringing sea otters back to San Francisco Bay; 100 years of tiny seashells reveal alarming trend threatening West Coast seafood; Earthquake early warning system sends first public alert to smartphones in California; and more …