A closely watched clinical trial in Britain that screened blood for early detection of cancer did not show a reduction in diagnoses at later stages of the disease. By Rebecca Robbins and Gina Kolata A ...

Women’s Day is a moment to recognise women who have shaped different fields, including technology and artificial intelligence.

Kennon Heard, MD, Ph.D., was skeptical when he first heard about cases in emergency departments of severe, recurring episodes of nausea and vomiting associated with chronic use of marijuana. In 2004, ...