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Instrumentation for scientific progress: (clockwise from upper left) a scanning electron microscope (Photo: LEO Electron Microscopy Inc.), a receiver that picks up signals from global positioning system satellites to determine location (Photo: Magellan), the first working 256-processor supercomputer (Photo: Tom Trower, NASA Ames Home Page), and the twin domes of the Keck telescopes, the largest visible-light detectors (Photo: Richard Wainscoat).

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NEWS OF THE WEEK
(Full Text = Full Text References = References)

Kids’ ADHD Care Gets a Wake-up Call Full Text References
Careful management of stimulant use combined with extensive behavioral programs appears to offer the greatest benefits to children with attention-deficit hyperactivity disorder, as well as to their parents.

Future for digital snapshots looks crisp Full Text References
Digital photos may soon look as clear as pictures taken with conventional 35-millimeter film because of a new image sensor with twice the number of pixels found in today’s digital cameras.

Chromosomes show plants’ secret complexity References
The first comprehensive DNA analysis of chromosomes from a plant reveals a high density of genes, surprising many scientists.

Stents, clot-busters improve survival References
The combination of propping open narrowed heart arteries with stainless-steel mesh cylinders and the clot-busting drug abciximab prevents some deaths and heart damage in cardiac patients.

Mars craft finds evidence of a past ocean Full Text References
Researchers have gathered the strongest evidence to date that the northern lowlands of Mars once had an ocean.

Bacteria offer lessons to drug makers References
Newly unveiled tactics used by bacteria in smiting other microbes suggest approaches for making new and better antibiotics.

New studies focus monarch worries References
Concentrations of Bt-corn pollen found drifting in a real-world cornfield can kill caterpillars of monarch butterflies.

A sign of healing appears in stratosphere References
The amount of harmful chlorine pollution has started to decline in the stratosphere, a sign that the ozone layer will soon begin its slow recovery from 70 years of chemical assault.

Also in this issue:

News of the Year

News of the Millennium