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Volume 406 Issue 6793, 20 July 2000

Opinion

  • Despite the pervasive tension between AIDS researchers and the South African government, last week's international AIDS conference in Durban was successful on several fronts.

    Opinion

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News

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News in Brief

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News Feature

  • Evolutionary trees constructed by studying biological molecules often don't resemble those drawn up from morphology. Can the two ever be reconciled, asks Trisha Gura

    • Trisha Gura
    News Feature
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Correspondence

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Book Review

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Millennium Essay

  • The revolutionary machine that shrank the world.

    • Vaclav Smil
    Millennium Essay
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Futures

  • By resurrecting extinct infodiversity, we may save our own culture.

    • Scott Westerfeld
    Futures
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News & Views

  • The textbooks say nothing can travel faster than light, not even light itself. New experiments show that this is no longer true, raising questions about the maximum speed at which we can send information.

    • Jon Marangos
    News & Views
  • To understand the motion of individual proteins in muscles or the cooperative motions of groups of bacteria, scientists need ideas from both biology and physics, as shown at a meeting held last month.

    • Philip Ball
    News & Views
  • Rats use their whiskers, which sweep back and forth, to detect objects. The resulting information is complicated: the brain needs to work out what was touched, and where and when it was touched. A study shows that these different types of information are segregated into two sensory channels.

    • Mathew E. Diamond
    News & Views
  • Water vapour in Earth's upper troposphere acts as a powerful greenhouse gas, hence the interest in monitoring variations in its concentration there. A way to do so may emerge from the finding that global lightning activity is correlated with upper tropospheric levels of water vapour.

    • Brian J. Soden
    News & Views
  • The ultimatum game, which involves sharing a hypothetical sum of money with someone else, has been used by anthropologists to investigate cultural differences in concepts of what is fair. The results were fascinating, as emerged at a meeting held last month.

    • Ruth Mace
    News & Views
  • Antifreeze proteins enable certain organisms to survive cold conditions, and are best known in fish. Examples from grass and two species of insect have now also been characterized.

    • Charles A. Knight
    News & Views
  • A new simulation provides answers to such questions as the best way to pack a long rope into a small box. Some of the optimal shapes correspond to the naturally occurring, helical structures of proteins and DNA.

    • Andrzej Stasiak
    • John H. Maddocks
    News & Views
  • Spectrin is thought be required for the integrity of cell membranes and a variety of other functions, such as cell polarization. But work with fruitflies and nematodes shows that spectrin's more likely role is as a 'protein accumulator', working to trap specific proteins at certain points beneath the plasma membrane.

    • Jennifer C. Pinder
    • Anthony J. Baines
    News & Views
  • If a human brain is regarded as a digital computer, it should be possible to measure its processing power from the frequency of nerve impulses. Daedalus reckons he can detect this firing rate from the magnetic activity of sodium ions in nerve cells.

    • David Jones
    News & Views
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Brief Communication

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Article

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Letter

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New on the Market

  • Download a trial of image analysis software, and seek those proteins.

    New on the Market
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