In its final days, the Trump administration created a rule that could eliminate thousands of regulations created by the Department of Health and Human Services. A lawsuit is challenging the rule.

Katie Engelhart explores the complexity of physician-assisted death in the book The Inevitable. She says patients seeking to end their own lives sometimes resort to veterinary drugs from overseas.

The Code Breaker profiles Jennifer Doudna, a Nobel Prize-winning biochemist key to the development of CRISPR, and examines the technology's exciting possibilities and need for oversight.

In 1721, London was in the grips of a deadly smallpox epidemic. One woman learned how to stop it, but her solution sowed political division.

In Southern California, pollutants from wildfire smoke caused up to a 10% increase in hospital admissions. Researchers say there's a need for better air monitoring and public health programs.

As the pace of vaccination picks up, so do reports of spoiled doses. In Tennessee, close to 5,000 doses have been lost, prompting more oversight from state and federal officials.

Scientists are spotting new coronavirus variants almost on a daily basis. So far public health experts are still most worried about three important ones.

If you've been delaying routine medical care in the past year, now's the time to catch up, doctors say. The consequences of missing some key screenings and health checkups can be lethal.

People who have been sick with COVID-19 may need only one dose of the normally two-shot vaccines. If that became policy it could extend vaccine supplies, but logistical challenges are daunting.

Advisers to the Centers for Disease Control and Prevention voted to endorse the emergency use of a single dose of a vaccine made by Johnson & Johnson. A study showed it was 66% effective in the U.S.