induced pluripotent stem cell, evolution, cell & molecular biology
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.
Bacteria Kamikazes
Bacteria Kamikazes
Kelly Rae Chi | Aug 16, 2011
Researchers design a synthetic bacterium that kills the infectious microbe Pseudomonas aeruginosa, sacrificing itself in the process.
How Caffeine Fights Cancer
Jef Akst | Aug 15, 2011
Caffeinated drinks may help prevent skin cancer by inhibiting a DNA repair pathway, thus killing potentially precancerous cells.
Designing Worm Proteins
Jef Akst | Aug 15, 2011
For the first time, researchers have engineered a multicellular organism that incorporates a synthetic amino acid into its proteins.
Oldest Known Wood
Jef Akst | Aug 12, 2011
Two newly described fossils suggest that wood is some 10 million years older than previous believed.
Cancer Researcher Fabricated Data
Jessica P. Johnson | Aug 11, 2011
Sheng Wang leaves the Boston University School of Medicine and agrees to retract two published studies.
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.
Baruj Benacerraf Dies
Edyta Zielinska | Aug 3, 2011
The Nobel Prize winner who discovered the gene that encodes the major histocompatibility complex passes away at age 90.