Gilead Shot Provides Total Protection From HIV in Trial of Young African Women

Gilead Shot Provides Total Protection From HIV in Trial of Young African Women

An injection given just twice a year could herald a breakthrough in protecting the population that has the highest infection rates.
Researchers Say Social Media Warning Is Too Broad

Researchers Say Social Media Warning Is Too Broad

Some scientists who study youth mental health say the evidence does not support the notion that social media is harmful per se.
How A.I. Is Revolutionizing Drug Development

How A.I. Is Revolutionizing Drug Development

In high-tech labs, workers are generating data to train A.I. algorithms to design better medicine, faster. But the transformation is just getting underway.