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.
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.
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.
One of the nation’s foremost computer scientists, exasperated by the unfriendliness of today’s computer systems, suggests what designers can do to make machines serve human needs–rather than the other way around.