Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

Volume 423 Issue 6938, 22 May 2003

Volume 423 Issue 6938

Subscribe

Editorial

  • The new Brazilian president has so far impressed with his handling of the country's shaky economy. He should now seize an opportunity to transform Brazil's ability to use science and technology for its economic development.

    Editorial

    Advertisement

  • The United States' challenge to Europe's ban on approving new transgenic foods could yield nothing but losers.

    Editorial
Top of page ⤴

News

Top of page ⤴

News in Brief

Top of page ⤴

Correction

Top of page ⤴

News Feature

  • It's not surprising that some academic papers seem to swim before our eyes — the scientific literature has become steadily less accessible over the past half-century. Can we stop this trend, asks Jonathan Knight.

    • Jonathan Knight
    News Feature

  • After decades of rule by first the military and then parties associated with the privileged élite, Brazil now has a left-wing president. David Adam considers the implications for the country's science.

    • David Adam
    News Feature
Top of page ⤴

Correspondence

Top of page ⤴

Books & Arts

Top of page ⤴

Lifeline

Top of page ⤴

News & Views

  • The vertebrate eye is far more than a passive receptor for visual information. The microcircuitry in the retina can, for instance, carry out the job of distinguishing object motion from background motion.

    • Richard H. Masland
    News & Views

  • The origin of energetic γ-ray bursts is still unknown. But the detection of polarization of the γ-rays provides fresh insight into the mechanism driving these powerful explosions.

    • Eli Waxman
    News & Views

  • An important category of genes — so-called pluripotency genes — are active in early embryos but silent in specialized cells. It seems that this silencing is difficult to reverse in cloned embryos.

    • Wolf Reik
    • Wendy Dean
    News & Views

  • The larger-than-expected thermally generated voltage seen in a layered-oxide material — which may prove useful in power generation or cooling — is now attributed to the spins of moving charges.

    • Cronin B. Vining
    News & Views

  • Lithium, already used to treat psychiatric disorders, has been found to reduce amyloid-peptide production in a mouse model of Alzheimer's disease. The implication is that lithium's target molecule helps to generate the peptides.

    • Bart De Strooper
    • James Woodgett
    News & Views

  • Two molecules may form a dimer if lured into an organic 'nanocage'. So far, the approach has only worked for identical molecules. But two different molecules will dimerize if, together, they snugly fit the dimensions of the cage.

    • V. Ramamurthy
    News & Views
Top of page ⤴

Brief Communication

Top of page ⤴

Correction

Top of page ⤴

Article

Top of page ⤴

Letter

Top of page ⤴

Corrigendum

Top of page ⤴

Addendum

Top of page ⤴

Erratum

Top of page ⤴

New on the Market

Top of page ⤴

Prospects

Top of page ⤴

Movers

Top of page ⤴
Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing

Search

Advanced search

Quick links