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image: Why Have Twins?

Why Have Twins?

By | August 11, 2011

Mothers more likely to have twins have heavier, healthier non-twin babies, possibly explaining why twinning evolved.

6 Comments

image: Arsenic-Based Life, Open to Critique

Arsenic-Based Life, Open to Critique

By | August 10, 2011

A researcher is repeating the controversial experiments that suggested a bacterium used arsenic rather than phosphorus in its DNA—with the world watching.

9 Comments

image: Rewriting <em>E. coli</em>’s Genetic Code

Rewriting E. coli’s Genetic Code

By | August 5, 2011

Researchers use directed evolution to create a bacterial strain that substitutes a synthetic base for thymine.

6 Comments

image: Anti-evolution Vandals?

Anti-evolution Vandals?

By | August 1, 2011

Pro-evolution bumper stickers and emblems are being removed from the cars of biologists in Florida.

72 Comments

image: Harmful Bacterial Metabolites

Harmful Bacterial Metabolites

By | August 1, 2011

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. 

0 Comments

image: Ernst Haeckel’s Pedigree of Man, 1874

Ernst Haeckel’s Pedigree of Man, 1874

By | August 1, 2011

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

21 Comments

image: An Unlichenly Pair

An Unlichenly Pair

By | August 1, 2011

A young botanist pays tribute to his mentor by naming a newly discovered, rare species in his honor.

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image: Capsule Reviews

Capsule Reviews

By | August 1, 2011

First Life, Radioactivity, Brain Bugs, Life of Earth

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Contributors

August 1, 2011

Meet some of the people featured in the August 2011 issue of The Scientist.

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image: Learning to Become a Tree Hugger

Learning to Become a Tree Hugger

By | August 1, 2011

A guide to free software for constructing and assessing species relationships

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