September 19, 1998 | Volume 154 | Number 12
Cover: Children cavort in a kaleidoscope of mirrors, an exhibit designed to demonstrate how light is reflected. Increasingly, museumsespecially science museumsare employing a scientific approach to making exhibits both appealing and informative. (Photo: Amy Snyder/The Exploratorium.)
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News of the Week:Immigrants Go from Health to Worse
New studies and a national review conclude that immigrants enjoy physical and mental health advantages over native-born U.S. residents, but health declines with length of exposure to U.S. society.
When only one ear is used, some blind people locate the origins of sounds more accurately than people who can see.
Scrub jays can remember not only what kind of food they hid and where but also when they buried it.
Representatives of 62 nations signed a new Rotterdam Convention to control the export of chemicals into countries that decide they cannot ensure the compounds safe use.
A proposed aircraft could fly between most points on Earth in 2 hours by skipping along the top of the atmosphere.
More than 70 percent of toddlers and preschoolers coming to an inner-city Philadelphia clinic had excess concentrations of lead in their blood.
New images taken by the Galileo spacecraft reveal that dust blasted off four tiny moons of Jupiter during collisions with interplanetary debris continually replenish the planets faint dust rings.
An enzyme found in Antarctic fish has evolved to accommodate saltwater temperatures below 0° C.
Disrupted sleep-wake cycles may correspond to an increased risk of breast cancer.
The concentration of a substance, called C-reactive protein, in the blood may predict a woman's risk of suffering a heart attack.
An excess of a protein called p53 in breast tissue of women with benign breast disease indicates an increased risk of cancer.
Low selenium levels, as measured by traces of the mineral in toenail clippings, are linked with an increased incidence of advanced prostate cancer.
The U.S. Food and Drug Administration has approved an emergency contraceptive packaged as Preven.
The drug famciclovir prevented most cases of genital herpes among study participants.
Baseball sluggers are connecting with the ball in a band on the bat rather than a single "sweet spot" when they get a solid hit.
The insect and human immune systems share a bacteria-binding protein.
Chemically coating chromosomes with clusters of atoms called methyl groups may help guard against cancer-causing mutations.
Tapping the social sciences to make exhibits fathomable and fun
Evaluation of visitor reactions improves museum exhibitions.
Emotional development attracts cross-cultural explorations
Studies of infants and children attempt to separate universal features of emotion from those that represent cultural experiences.
Letters: A Selection from Letters to the Editor
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