e coli, evolution
New Oldest Fossils
Jef Akst | Aug 22, 2011
Fossils discovered in Australian rocks may be the remnants of three and a half billion-year-old microorganisms.
Oldest Known Wood
Jef Akst | Aug 12, 2011
Two newly described fossils suggest that wood is some 10 million years older than previous believed.
Yeast Don't Need Oxygen
Bob Grant | Aug 11, 2011
Scientists discover that ancestors of the unicellular fungi can synthesize essential biomolecules with only trace levels of O2.
Why Have Twins?
Jef Akst | Aug 11, 2011
Mothers more likely to have twins have heavier, healthier non-twin babies, possibly explaining why twinning evolved.
Rewriting E. coli’s Genetic Code
Sabine Louët | Aug 5, 2011
Researchers use directed evolution to create a bacterial strain that substitutes a synthetic base for thymine.
Anti-evolution Vandals?
Edyta Zielinska | Aug 1, 2011
Pro-evolution bumper stickers and emblems are being removed from the cars of biologists in Florida.
Ernst Haeckel’s Pedigree of Man, 1874
Hannah Waters | Aug 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
An Unlichenly Pair
Hannah Waters | Aug 1, 2011
A young botanist pays tribute to his mentor by naming a newly discovered, rare species in his honor.
Learning to Become a Tree Hugger
Amy Maxmen | Aug 1, 2011
A guide to free software for constructing and assessing species relationships
Capsule Reviews
Bob Grant | Aug 1, 2011
First Life, Radioactivity, Brain Bugs, Life of Earth