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