News
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Life
Genetics offers more hints about autism
Three studies illustrate why a single cause for autism spectrum disorders has been so difficult to pin down.
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Life
Weeds increasingly immune to herbicides
Agricultural scientists warn that crop yields could drop as a result of emerging resistance.
By Janet Raloff -
Life
Marine microbes fritter away jelly bonus
Bacterial feasts during jellyfish blooms drain valuable carbon out of the food web.
By Susan Milius -
Health & Medicine
Drug prevents some breast cancers
A hormone-blocking compound can waylay some malignancies in healthy women who are deemed at risk.
By Nathan Seppa -
Humans
Site hints at Asian roots for human genus
An early Homo species inhabited the Caucasus region 1.85 million years ago, casting doubt on its proposed African origin.
By Bruce Bower -
Space
Black hole jets in HD
Images of unprecedented resolution offer insight into how black holes swallow up matter.
By Ron Cowen -
Tech
Information flow can reveal dirty deeds
An analysis of Enron e-mails reveals that corrupt networks have a distinctive shape.
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Health & Medicine
A year adds up to big changes in brain
Third grade brings big shifts in how kids use their heads to solve math problems.
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Physics
Light created from the void
An international team of physicists confirms a long-held theory about the quantum energy that fills empty space.
By Devin Powell -
Genetics
Flexible DNA computer finds square roots
Scientists design a digital circuit made of molecules that may be able to crunch a wider variety of complex math problems than previous versions.
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Life
Holding back evolution
Gene mutations that are beneficial on their own combine to slow down progress, new bacterial experiments show.