We’re a long way from Gilead, praise be, but pollution can hurt fertility.

A simple study of rodent patterns hints at our growing ability to link genetic changes to physical ones.  

Scientists have discovered some of the genetic changes behind the useless wings of the Galapagos cormorant.

Its ability to cope with wildly fluctuating blood-sugar levels might provide clues to improving human health.

The Masthead is starting a competition to find this summer’s best longread.

By studying flies, researchers have identified a gene that induces sleepiness—and protects against infections.

An appetite-suppressing drug makes them act as if they’ve already feasted on blood.

Disease narratives maintain certain features over time, even as specific details vary to fit a new epidemic or context.

Science has a history of inflated promises when it comes to disease treatment.

The threat of a flu pandemic clouds even his legendary optimism, so he's launching an initiative to prevent one.