Mothers more likely to have twins have heavier, healthier non-twin babies, possibly explaining why twinning evolved.
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A researcher is repeating the controversial experiments that suggested a bacterium used arsenic rather than phosphorus in its DNA—with the world watching.
Researchers use directed evolution to create a bacterial strain that substitutes a synthetic base for thymine.
Pro-evolution bumper stickers and emblems are being removed from the cars of biologists in Florida.
Gut bacteria that feed on healthy food appear to amplify the nutritional benefits of those foods. However, they also appear to amplify the undesirable effects of unhealthy food. Here are a few examples. Read the full story.
After completing his studies in medicine and biology, a restless Ernst Haeckel set off for Italy in 1859 to study art and marine biology. The diversity of life fascinated the 26-year-old Prussian, and in addition to painting landscapes, he spent the
A young botanist pays tribute to his mentor by naming a newly discovered, rare species in his honor.
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August 1, 2011
Meet some of the people featured in the August 2011 issue of The Scientist.
A guide to free software for constructing and assessing species relationships
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