Experts say it's not a question of if, but when, the next global epidemic will happen. But scientists are working to stop the next outbreak in its tracks.

Smart contact lenses with embedded mirrors could give telescopic vision, helping to restore sight in people with macular degeneration.

1.4 billion people globally are at risk of elephantiasis -- and 500 million are in India. But a new campaign is intent on eliminating it.

Scientists are uncovering the secrets of tapeworms that can live in the human brain.

A haze has periodically wafted over southeast Asia for 20 years. But despite public health fears, the problem remains as opaque as the smoke itself.

"It's such a loser of a disease that some countries eradicated it without even knowing they'd had it. It can naturally disappear."

There were 2.1 million new HIV infections in 2013. Will we ever have an effective vaccine?

How health officials are trying to eradicate polio once and for all.

While their peers were playing video games or panicking about the prom, a group of young whiz kids has been prioritizing medical innovation.

Diseases such as measles once plagued Maasai communities in Tanzania. But not anymore.

The 21st century has seen the growth of 3-D printing, with applications in architecture, engineering, and now, medicine.