Realizing that many cancers depend on antioxidants for their survival, researchers have successfully designed a dietary strategy that suppresses breast cancer growth and spread, at least in animals. (p. 248)

Breathing in smoke from another person's cigarette causes blood changes that reduce the likelihood that an individual will survive a heart attack. (p. 248)

Scientists are making progress toward inserting genes to cure impotence temporarily. (p. 237)

A dentist has found three compounds in saliva that could be used to gauge bone loss. (p. 237)

Scientists tinkering with a chemical now vital to life think they've recreated one of the central molecules that gave rise to the chemistry of life. (p. 212)

People don't see ultraviolet light but birds do, so studies of egg mimickry may need to stop relying so much on human vision. (p. 216)

Scientists have found the gene that directs chloroplasts to dance out of a cell's shaded edges to soak up the sun or back into that shade when the light is too intense. (p. 200)

One type of restriction enzyme not only cuts a DNA strand but also looks like a pair of scissors. (p. 200)