Biology News

Was Tyrannosaurus rex cold-blooded? Did birds regulate their body temperatures before or after they began to grow feathers? Why would evolution favor warm-bloodedness when it has such a high energy cost?

A group of researchers have succeeded n building a fully functional replica model -- an ornithopter -- of a swallowtail butterfly, and they have filmed their model butterfly flying.

Kudzu, an invasive vine that is spreading across the southeastern United States and northward, is a major contributor to large-scale increases of the pollutant surface ozone

A scientific expedition to a pristine wilderness once dubbed "The Lost World" by Western media has revealed a stunning diversity of spectacular species

Why were the sauropod dinosaurs able to get so much larger than today's terrestrial animals? A research group led by the University of Bonn seems to have solved this puzzle

Researchers at the U.S. Department of Energy's Lawrence Berkeley National Laboratory has used x-ray diffraction microscopy to make images of whole yeast cells, achieving the highest resolution -- 11 to 13 nanometers (billionths of a meter) -- ever obtaine

Researchers in the Department of Biochemistry and Molecular Biology at Thomas Jefferson University have found that the level of a single protein in the tiny roundworm C. elegans determines how long it lives

Researchers have discovered that mice -- and probably humans and other mammals as well -- produce their own morphine in their bodies

Researchers at Johns Hopkins have discovered that a compound in dark chocolate may protect the brain after a stroke by increasing cellular signals already known to shield nerve cells from damage

The hairs on the surface of water ferns could allow ships to have a 10 percent decrease in fuel consumption. The plant has the rare ability to put on a gauzy skirt of air under water