Computer tomography scans, or CT scans, are an invaluable tool for diagnosing cancer and other conditions. But in a cruel twist, the medical imaging technique may be more harmful than once thought, ...

A third top official at the Pentagon has been placed on administrative leave, two U.S. officials told ABC News on Wednesday. Education Secretary Linda McMahon reacts to Harvard rejecting the Trump ...

NPR's Ayesha Rascoe asks Dr. Rebecca Smith-Bindman about her research indicating CT scans, which emit radiation, will cause some 100,000 cases of cancer annually.