Stem cells

Many of the most profound scientific questions—and some of humanity's most urgent problems—pertain to the science of atoms and molecules

Enthusiasm for unapproved treatments worries regulators.

Scientists have made reprogrammed stem cells from an endangered rhinoceros and a monkey

US judge throws out case meant to halt federal funding, but research remains vulnerable.

US judge throws out case meant to halt federal funding, but research remains vulnerable.

A new technique offers scientists an unprecedented window into complex psychiatric disorders

An alternative explanation for cancer's origins could lead to better therapies

In the absence of regulation, researchers weigh their options for educating patients about unproven treatments.

A handful of scientists aim to satisfy the world's growing appetite for steak without wrecking the planet. The first step: grab a petri dish

Studying blobby, asexual amoebas could absolve biology of its animal bias when it comes to uncovering the mysteries of sex

Embryonic stem cells may help treat a leading cause of blindness

Researchers have found new ways to interfere with a co-receptor important to HIV infection, and the outcomes so far are encouraging