A protein that helps sperm move their tails may be a perfect target for a male contraceptive. (p. 228)

The newly operating Gemini Multi-Object Spectrograph instrument on the Gemini North Telescope on Mauna Kea, Hawaii, took a high-resolution composite photograph of a galaxy 30 million light-years away. (p. 228)

Training yields much more improvement in the ability to discriminate subtle differences in the loudness of sounds entering the right and left ears than in the timing of sounds arriving in each ear, a finding with implications for treating some speech and language disorders. (p. 229)

Scientists in South Africa have found the first known examples of gerbils pollinating a flower. (p. 229)

Researchers have discovered the molecule vinyl alcohol in space. (p. 231)

Paleontologists have unearthed the remains of what they believe could be the largest flying creature yet discovered—a 12-meter-wingspan pterosaur. (p. 231)

A new report that a specific brain region orchestrates the recognition of human bodies and body parts stirs up a scientific debate over the neural workings of perception. (p. 232)

Individuals convicted of drunk driving often have a history of not only alcohol but also illicit drug abuse and other psychiatric disorders. (p. 232)

Chemicals that shape developing embryos may hitch rides in vesicles called argosomes. (p. 232)

A form of nitric oxide tells the brain when the body needs to breathe faster. (p. 232)

Male and female brains react differently to two putative pheromones, compounds related to the hormones testosterone and estrogen. (p. 232)

Astronomers appear to have a heavenly crisis on their hands, and it concerns material they can't even detect. (p. 234)

Researchers can use microcantilevers studded with antibodies that react to prostate specific antigen, or PSA, to analyze blood samples for signs of prostate cancer. (p. 237)

Dehydroascorbic acid, a precursor of vitamin C, may help stroke patients retain use of parts of their brain at risk from the blood shut-off caused by strokes. (p. 237)

Researchers have made a miniature device that can quickly detect hydrogen leaks. (p. 237)

A new type of epoxy adhesive loses its stickiness when heated, allowing easy separation of materials that were once tightly bonded. (p. 237)

One particular class of flame retardants—polybrominated diphenyl ethers—is accumulating at alarming rates in the environment, taints human breast milk, and has toxic effects similar to the now-banned PCBs. (p. 238)

This year the Nobel prizes are a century old. (p. 230)

The 2001 Nobel Prize in Physiology or Medicine goes to three researchers who pioneered work in cell division. (p. 230)

Three scientists have jointly won the 2001 Nobel Prize in Physics for creating the first samples, 6 years ago, of a long-sought and strange state of matter called a Bose-Einstein condensate. (p. 230)

The 2001 Nobel Prize in Chemistry recognizes the development of molecules for catalyzing fundamental reactions used to make countless pharmaceuticals. (p. 231)