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By making E. coli dependent on an artificial amino acid, scientists hope to show that engineered organisms can be safer and more useful for industrial processes like drug production.

Two Americans were released Thursday from an Atlanta hospital after treatment for Ebola. The news has generated a flurry of questions about what happens after you survive Ebola. So we asked the CDC.

It's tempting to seek out the mac and cheese or a pint of ice cream after a terrible, horrible, no good day. But fresh research suggests such comfort foods might not be mood boosters after all.

The ALS Association has raised more than $94 million in recent weeks via its online ice bucket challenge — compared with $2.7 million this time last year. Now what?

People who live in a traditional village — that means a community of about 150 people — are far better off than the rest of us. The author of a new book explains "the village effect."

JFK hospital shut down when several doctors died of Ebola. Now it's open again. And the staff is taking rigorous measures to make sure the virus doesn't make its way past the front gate.

The number of tuberculosis cases is far higher than previously thought. And Ebola is making some patients stay away from hospitals. Yet the mortality rate is dropping.

Genetic tests are recommended for women with a family history of breast cancer. One researcher says all women should be screened, but others say there's not enough evidence that they are at risk.

The human nose may be able to distinguish more than a trillion different odors and fragrances, research hints. If true, our noses are much more discerning with smells than our eyes are with color.

Polls show that Sunshine State voters are likely to approve a measure legalizing medical marijuana in November. Businesses are already flocking to the state, eager to set up shop.