BIOLOGY

The drug manipulates the expression of a specific gene associated with the disease.

These microscopic monsters just get weirder and weirder.

We're still learning about one of the most important structures of the brain.

You're probably aware of some vestigial body parts, like wisdom teeth, that the human body doesn't really need. But did you know there are several muscles in that category as well?

The world is teeming with life, and we're always discovering new species—including some that stretch the limits of how we view and classify biological life forms. Here are a few that clearly don't play by the rules.

8. You might want to rethink an ankle tattoo.

Bird poop has been a favored fertilizer for centuries—and, it turns out, is an excellent preserver of human flesh.

Dysfunctional gene expression may make some people hypersensitive to sex hormones like estrogen and progesterone.

Scientists were able to reduce methane production by 99 percent in preliminary tests on artificial cow stomachs.

Life on Mars has yet to be found, but we're already making plans to protect it from us—and us from it.

The animal lived off the coast of what is now Washington state about 10 million years ago and probably fished like seals do, relying on the power of its oversized eyes to track its prey.

The brain is arguably the one organ that makes you who you are—and the largest part of the brain is the neocortex.