Paleontologists have discovered a Tyrannosaurus rex and its very complete skull in northern Montana. The find, which paleontologists estimate to be about 20 percent of the animal, includes vertebrae, ribs, hips, and lower jaw bones.
New mechanical chains made of soft matter can transmit signals across long distances. Because they are flexible, the circuits could be used in machines such as soft robots or lightweight aircraft constructed from pliable, nonmetallic materials.
Spatial reasoning measured in infancy predicts how children do at math at age 4, a new study finds.