Elijah Behr, M.D., a cardiologist at Mayo Clinic Healthcare in London, explains five things it is important to know about fainting. Fainting or blacking out, also known as syncope, is a temporary ...

NBC News on Wednesday tapped Tom Llamas to take over the “Nightly News” anchor chair from Lester Holt when he steps down this summer. Llamas, a senior national correspondent and anchor of ...

Mr. Llamas, an anchor on the company’s streaming news service, will succeed Lester Holt, who last month announced his plans to step down. By John Koblin Tom Llamas will take over as the anchor ...

Elijah Behr, M.D., a cardiologist at Mayo Clinic Healthcare in London, explains five things it is important to know about fainting. Fainting or blacking out, also known as syncope, is a temporary ...