SN Online

EARTH IN ACTION
Learn about sinkhole science in Alex Witze’s column “Geologists develop weapons to combat that sinkhole feeling.”

ENVIRONMENT
There’s good news for some corals in “Isolated coral reefs can regrow after bleaching.”

DELETED SCENES
Several new studies support claims of vitamin D’s health benefits. See “Vitamin D doesn’t disappoint.”

HUMANS
Kids with autism may know more about how others think than previously thought. Read “Competition brings out autism’s social side.”