Is secondhand marijuana smoke as damaging as tobacco smoke?

A new study compares the effects of secondhand marijuana smoke to that of tobacco.

The Zika virus might have reached the U.S., Florida governor warns

Should the virus get a foothold in southern Florida, containing it might become difficult, if not impossible.

Oldest case of human cancer is 1.7 million years old

Not a modern-day disease after all.

Hormone therapy successfully used to stop cells from aging for the first time

A male sex hormone could keep our cells young forever.

Cockroach milk: superfood of the future?

What better way to top off your meal?

Zika virus solution might lie in oil of common flower

The key to fighting Zika might be as simple as a common flower and some water.

Dolly sheep clones show no long-term health issues

Despite concerns, these clones have lived long and healthy lives.