stem cells, microbiology, developmental biology, evolution
Evolutionary Pioneer Dies at 73
Edyta Zielinska | Nov 28, 2011
Lynn Margulis, an innovative thinker who proposed symbiosis as a major mechanism for speciation, passed away last week.
Whales Saved From Highway Project
Bob Grant | Nov 21, 2011
A team of paleontologists is racing to recover dozens of fossilized whale skeletons from the site of a road building excavation in northern Chile.
Battle of the Sexes
Hannah Waters | Nov 17, 2011
Traits that help one sex but hurt the other are not sufficient for maintaining genetic variation.
First Lab-grown Blood Transfusion
Jef Akst | Nov 16, 2011
Blood cells derived from a person’s bone marrow stem cells are injected back into his body.
First hESC Trial Kaput
Jef Akst | Nov 15, 2011
Geron is terminating a clinical trial testing a human embryonic stem cell treatment for spinal cord injury.
Infection Selection
Ruth Williams | Nov 13, 2011
Scientists track changes in bacterial genomes during a hospital outbreak to discover potential pathogenesis genes.
A Smoke-Swirl of Birds
Jef Akst | Nov 10, 2011
A video of thousands of birds flying as a single coordinated, amorphous group stirs up questions about how they do it.
How Skin Tells Time
Ruth Williams | Nov 9, 2011
The behavior of skin stem cells is regulated by a 24-hour circadian clock.
Bacterial Identity Crisis
Cristina Luiggi | Nov 9, 2011
Researchers probe the genetics of a group of bacteria known to extensively swap DNA sequences with other species—blurring the species boundaries.
Pioneers Make More Babies
Jef Akst | Nov 7, 2011
Women of the French families that colonized Canada in the 17th and 18th centuries had more children and grandchildren than late comers to the region.