Get any of our free daily email newsletters — news headlines, opinion, e-edition, obituaries and more. Know your rodents. As a wildlife biologist for about 60 years, I would like to share my ...

SANTA FE, N.M. (AP) — Actor Gene Hackman died of heart disease a full week after his wife died from hantavirus in their New Mexico hillside home, likely unaware that she was dead because he was ...

The development of a tooth germ in a precise size, shape, and position in the jaw, involves meticulous regulation of cell proliferation and cell death. Apoptosis, as the most common type of programmed ...

Some sea slugs sequester chloroplasts from algal food in their intestinal cells and photosynthesize for months. This phenomenon, kleptoplasty, poses a question of how the chloroplast retains its ...