Janelle Weaver

The new method relies on fetal DNA taken from the mother's blood, rather than from fluids and tissue surrounding the fetus.

Irisin, a newfound hormone, may stimulate weight loss and improve health by mimicking the effects of exercise.

Mice without serotonin more likely to mount fellow males.

Scientists "crawled through" a jungle of brain cells to create their map.

The data deluge is at the limits of the human mind, scientist says.

Long childhood is part of what makes humans unique, but this extended developmental stage comes with a cost: a risk of cancer and other genetic diseases.

When the mother hihi bird has a chance to mate multiple times in a season, begging chicks get slighted.

The sequenced female revealed her genes evolved more slowly than those of chimps and humans.

The pudgy penguins have lower survival and reproductive rates due to the metal ID bands.

Three doctors say not only is torture unethical, the scientific basis used to validate them was flawed.

As the ice melts, once-distant species are coming into contact, leading to polar-grizzly hybrids and many others.

Ditch a gas-guzzling car for a bike and save your gut and the planet.

Before dinosaurs' demise, mammals were basically vermin scuttling around beasts. And then their size exploded.

Ancient navigational error brought great white sharks to the Mediterranean.