What the Polio Vaccine Has Meant for Public Health

What the Polio Vaccine Has Meant for Public Health

A lawyer working with Robert F. Kennedy Jr. has asked the F.D.A. to withdraw approval of the current shot because it hasn’t been tested against a placebo. Scientists say such a test would be unethical.
The Brave New World of A.I.-Powered Self-Harm Alerts

The Brave New World of A.I.-Powered Self-Harm Alerts

New technology alerts schools when students type words related to suicide. But do the timely interventions balance out the false alarms?