New observations confirm that the famed ivory-billed woodpecker has not gone extinct after all. (p. 291)

Astronomers are debating whether an image of a planetary-mass object orbiting a brown dwarf qualifies as the first image of an extrasolar planet. (p. 291)

Increasing the amount of antioxidants naturally produced in the body and directing those molecules to where they're needed can dramatically slow the aging process, according to a new study in mice. (p. 292)

The potentially harmful effects of buckyballs in aquatic environments could vary depending on the chemistry of the water. (p. 292)

A report just released by the U.S. Geological Survey ranks the threats posed by the nation's volcanoes. (p. 293)

Heat along with radiation treatment shrinks some tumors faster than does radiation alone. (p. 294)

Archaeologists working near the Red Sea have discovered remains of an Egyptian port that emerged around 4,000 years ago, including two caves used by mariners for storage and for religious ceremonies. (p. 294)

Radio transmitters broadcasting from imploding buildings are informing engineers about how such collapses disrupt radio communications and how rescuers might overcome those disruptions. (p. 296)

Sunken whale carcasses support unique marine ecosystems that display stages of succession and change, just as land ecosystems do. (p. 298)

Scientists have created a polymer that, after being deformed, will revert to its original shape when exposed to ultraviolet light. (p. 301)

A new study suggests that patients might safely use painkillers such as ibuprofen up to 24 hours before surgery. (p. 301)

By switching from biofuels such as wood and charcoal to kerosene or other fossil fuels, people in many parts of Africa could significantly trim indoor air pollution, thereby delaying millions of premature deaths from pulmonary disease over the next 25 years. (p. 301)

Low doses of the chemical that causes marijuana's high can slow the progression of atherosclerosis. (p. 301)

People with cancers of the kidney or prostate are more likely to have a certain genetic variation in the mitochondria within their cells. (p. 302)

Cholesterol-lowering drugs, especially when combined with anti-inflammatory medication, may inhibit some cancers. (p. 302)

Calcium supplements' protective effect against colorectal cancer lasts years after a person stops taking the pills. (p. 302)

Taking over-the-counter anti-inflammatory medication can reduce a smoker's likelihood of developing mouth cancer. (p. 302)

A drug that bottles up the so-called epidermal growth factor receptor might fight lung cancer. (p. 302)

(p. 303)