Notebook

  1. Health & Medicine

    At-home telomere testing is not a reliable marker of aging, researcher says

    Telomere testing for consumers offers a poor measure of “biological age,” says Johns Hopkins oncologist Mary Armanios.

    By Cori Vanchieri
  2. Tech

    50 years ago, NASA astronauts prepared to return to space

    Apollo 7 crewmembers underwent their first major tests 50 years ago. Today, U.S. astronauts struggle to get into space.

    By Dan Garisto
  3. Health & Medicine

    Blame opioids for a fifth of young adult deaths in the United States

    Of young adults aged 25 to 34 who died in 2016, 20 percent of those deaths were opioid-related.

    By Aimee Cunningham
  4. Health & Medicine

    Even in the shade, a car’s interior can get lethally hot

    A car’s interior can get lethally hot on summer days, even when it’s parked in the shade.