Simar Bajaj

During the Covid-19 pandemic, wastewater testing became a virus warning system. Now, scientists are using the approach to understand how communities eat.

Wearables can offer rough information about a person’s health, experts say, but only some metrics are medically useful.

For years, medicine has tried to eliminate stigma. Now, Robert F. Kennedy Jr. is bringing back the language personal responsibility.

Plus, Iran begins lifting an internet blackout.

James Antaki’s efforts to develop a baby’s heart were close to success when his federal funding was cut off. The grants were eventually restored; rebuilding what was lost wasn’t so easy.