Recognizing that tumor cells lurking in the body after cancer treatment will cause a relapse of cancer, scientists are working to employ nature's army-the immune system-to destroy remaining enemy outposts.
Are the world's amphibians-vulnerable to eco-logical changes in water and on land-acting like canaries in a coal mine, warning us of environmental dangers below the threshold of human perception?
Today's programs for defending against missile attacks are less ambitious than the Reagan-era Star Wars efforts. But the new systems are still too easily foiled, and their deployment would slow arms cuts.
Collecting, selecting, and refining the stories that go online, web-based magazines are transforming the internet experience. But these embryonic publications don't yet fully exploit the new medium's potential-and their financial viability is in question.
Hubble Vision: Astronomy with the Hubble Telescope
Escape Velocity: Cyberculture at the End of the Century
Water may seem to be everywhere, but for a rising portion of the world's population, there may soon be hardly a drop to drink -or to use for growing food, supporting industries and cities, and preserving life-giving ecosystems.
During total eclipses of the sun, at least one ancient culture performed mass human sacrifice to placate the gods. While our understanding of these celestial phenomena has grown, the author rediscovers the scientific curiosity they engender.
A recent photography exhibit goes behind the closed doors of major laboratories to shed fascinating light on the research shaping modern life.
A variety of high-tech bomb detectors are under study, but certification, cost, and privacy dilemmas could keep them from your local airport.