Tim Fitzsimons

Public health interventions and antiviral drugs have put HIV on the ropes in the U.S. But it's unlikely that infections can be wiped out without a vaccine.

The World Health Organization has just recommended that all HIV positive people take antiretroviral medications. If that guideline is enforced, it could help stop the spread of HIV worldwide.

Facebook's newest tool, known as Safety Check, aims to allow people to quickly alert friends and family that they are safe after a natural disaster.

Some owners of Apple's new iPhone 6 and 6 Plus are discovering that their superslim glass and aluminum devices aren't holding up well in an environment that's usually safe: their pockets.

Apple wants to change the way you pay for things. Credit card companies are embracing its new mobile payment system as a boost to security, but analysts say Apple could disrupt the payments industry.