Researchers found children with highly addictive use of phones, video games or social media were two to three times as likely to have thoughts of suicide or to harm themselves.
Dr. Fiona Havers is influential among researchers who study immunizations. The wholesale dismissal of the agency's scientific advisers crossed the line, she said.
Four experts were sued for defamation ahead of a seminar where they planned to talk about research into the potential health risks on playgrounds and sports fields nationwide.
A new book shows that the Northern Dene people of Alaska and Canada have known far more about the stars than an earlier generation of scientists were willing to acknowledge.