July 26, 1997 | Volume 152 |
Number 4 Cover: Small roundworms known as nematodes can be seen inside the head of this termite. Bacteria that live symbiotically in the nematodes' intestine produce an unusual cornucopia of chemicals, including novel antibiotics and insecticides, as well as an enzyme that can make the insect glow in the dark. (Photo: George Poinar)
Killing Them Lightly
July 26, 1997 | Volume 152 | Number 4
Cover: Small roundworms known as nematodes can be seen inside the head of this termite. Bacteria that live symbiotically in the nematodes' intestine produce an unusual cornucopia of chemicals, including novel antibiotics and insecticides, as well as an enzyme that can make the insect glow in the dark. (Photo: George Poinar)
MathLandFood for Thought The Mystery Box
Full Text Available for Selected Articles
A sudden tilting of the planet during the Cambrian period may have spawned an explosion in the diversity of animal life.
Internet congestion stirs up data storms
Frequent spikes of high activity occurring at random times and typically lasting a fraction of a second punctuate Internet traffic.
HIV protein prepares virus' next victims
The HIV protein Tat triggers changes within immune cells that allow the AIDS virus to reproduce there.
Weak flames ignite hope for clean engines
Studies of flames aboard the space shuttle allow researchers to improve their models of combustion and soot formation.
Wordy tots ignore some speech sounds
As 14-month-old infants begin to learn word meanings, they ignore certain speech sounds that 8-month-old babies perceive with ease.
Jellies and their twinkling protein
Individual molecules of a green fluorescent protein, which makes jellyfish glow, blink repeatedly when excited by laser light.
Secrets underlie lethal heart condition
Five genetic mutations are now known to cause long QT syndrome, a potentially fatal heart condition.
Plants with a bug home advantage
Small tufts of hair on a plant can provide shelter to insects that benefit the plant.
Cassava pest biologically suppressed
A predatory mite from Brazil is turning out to control a destructive cassava pest in Africa.
Gene tells left from right
Mutations in a gene called lefty result in mice whose internal organs end up on the wrong sides of their bodies.
Worms and flies share a sexy gene
A gene involved in determining the sex of worms resembles one that performs similar duties in insects.
Blood screens may need a finer mesh
Current screening methods for blood donated in the United States may miss some viral fragments.
Inhaled steroids linked to cataracts
Older people who used corticosteroid inhalers have a heightened risk of developing cataracts.
The San Andreas' secret helpers
Scientists resolve a long-standing problem about how the Pacific tectonic plate manages to slide past North America.
Volcano dumps ash on Mexico City
The recent eruption of Popocatepetl was the biggest in more than 50 years.
A Soil Story
Life inside a nematode: Creative chemistry and novel pest control
Bacteria generate light and produce red pigments that behave like antibiotics and crystals that may become useful insecticides.
From Microdevice to Smart Dust
Learning to build, program, and control multitudes of interacting micromachines
Microelectromechanical systems offer novel ways of maneuvering aircraft, moving around paper or microscopic parts, and performing aerial surveillance.
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1997 Science Service
copyright 1997 Science Service