A recently issued Zika virus map shows how the virus is spreading in both hemispheres. Experts believe an outbreak in the U.S. this summer is inevitable.
It has used a tiny, needle-like probe to wipe out entire cities over the centuries - and it's arguably the most relentless killer on Earth.
The CDC says that certain types of laminate flooring poses a cancer risk; the risk of cancer is now set at six to 30 cases per 100,000 people.
A sexually transmitted case of Zika in Texas has scientists wondering how much of a risk infection through sex is for the usually mosquito-spread illness.
Zika virus: The CDC has issued an alert recommending enhanced precautions or postponed travel.