Physicists have observed signatures of radioactivity deep within Earth, enabling measurement of planet-wide thorium and uranium quantities. (p. 67)

Scientists say that they have found the first vertebrate to make its courtship music in the same way as a cricket does. (p. 67)

Skeletal remains found in the fossilized eggs of an early dinosaur hint that adults of the species may have cared for their hatchlings. (p. 68)

Scientists have discovered a new way to stimulate one part of an animal's body to grow extra bone tissue that can be transplanted elsewhere. (p. 68)

The brain rapidly adjusts its internal map of the body's skin surface, according to a new study of people who underwent laboratory procedures that induced illusions of finger growth or shrinkage. (p. 69)

On July 14, the Cassini spacecraft came within 175 kilometers of the south polar region of Saturn's bright, tiny moon Enceladus, revealing a tortured terrain of faults, folds, and ridges. (p. 69)

The folk remedy echinacea shows no benefit against the common cold. (p. 70)

The U.S. population's exposure to lead, secondhand smoke, and certain other harmful chemicals has trended downward, but some newly measured contaminants are present in a sizable fraction of the nation's residents, according to an updated report. (p. 70)

Increasingly, researchers are using geophysical techniques such as ground-penetrating radar and magnetometers to target their excavations. (p. 72)

Pharmaceutical marketing toward both patients and physicians appears to influence which medicines get prescribed. (p. 75)

Genetic mutations in cells' internal powerhouses could contribute to aging by stifling tissue maintenance. (p. 77)

New radiocarbon dates from one of ancient Rome's underground cemeteries, or catacombs, indicates that these structures were built in the Jewish community more than a century before early Christians started to do the same. (p. 77)

To study some of the hottest regions in the universe, the Japanese Aerospace Exploration Agency has launched the coldest instrument ever flown. (p. 77)

New evidence supports a theory that men who were exposed to excess estrogenic hormones at an early stage of fetal development may face an elevated risk of testicular cancer. (p. 77)

Semiconductor nanocrystals can incorporate property-enhancing impurities into their growing structures as long as the crystals have facets onto which such atoms can strongly adhere. (p. 77)

Children and teenagers with bipolar disorder, a severe mental ailment that involves sharp mood swings, display unusually low tissue volume in a brain area involved in learning to regulate emotions. (p. 78)

A new analysis of why the sky looks blue reveals that the reason may be the combined effects of the atmosphere and of our eyes' color-sensing apparatus. (p. 78)

Observations with the Submillimeter Array on Hawaii's Mauna Kea reveal that, despite their bombardment by a stellar bully, the disks in Orion have enough material to form planets. (p. 78)

(p. 79)