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The FDA approved a new sunscreen ingredient for the U.S. Bemotrizinol has long been used in Europe and Asia. The chemical compound protects against UVA and UVB rays.

Wellness and longevity influencers are pushing a compound called NAD+. There's scientific interest in its potential, but researchers say the marketing claims have gotten ahead of the science.

Like many cities, Denver's largest source of greenhouse gas emissions is its buildings. Heating and cooling skyscrapers requires a lot of fossil fuels. Now, the city is trying a surprising solution.

Two recent deaths brought the total to 343, matching the death toll from Sept. 11, the FDNY said. Some 11,000 former and current FDNY employees suffer from 9/11-related illnesses, 3,500 with cancer.

A professor of Jewish history at UCLA has tried to stake out some middle ground, where Jews and Palestinians on campus could safely stand and grieve for one another.

Africa races to contain a fast-spreading Ebola outbreak threatening 10 countries as infections spill from eastern Congo into Uganda.

One of the 18 Americans tested "mildly" positive for the virus during the U.S. return flight. A French woman has also tested positive — she was was among five French passengers repatriated to Paris.

A reactivation of the virus that causes chickenpox, the illness can be miserable. Here's what to know about early warning signs, long-term symptoms and some surprising news about the vaccine.

Early scandals have not slowed lawyers' adoption of AI tools, even as court sanctions over fake legal briefs continue to rise.

The war in Iran has slowed down international shipping, much of which contains medical and humanitarian goods destined for Asia and Africa.