sexual orientation, evolution
Bacterial Rejuvenation
Edyta Zielinska | Oct 27, 2011
Bacteria age, but as a lineage, can live forever.
Wolbachia Boost Stem Cell Production
Jef Akst | Oct 20, 2011
The widespread bacteria known to manipulate host reproductive output can do so by ramping up stem cell division and consequent egg production in Drosophila.
New Genes, New Brain
Cristina Luiggi | Oct 19, 2011
A bevy of genes known to be active during human fetal and infant development first appeared at the same time that the prefrontal cortex—the area of the brain associated with human intelligence and personality—took shape in primates.
Behavior Brief
Jef Akst | Oct 17, 2011
A round-up of recent discoveries in behavior research
Cellular Origins of Giant Viruses?
Cristina Luiggi | Oct 16, 2011
The largest virus to be sequenced prompts researchers to consider whether giant viruses were once full-fledged living organisms.
Climate-Shaped Arabidopsis Genome
Kerry Grens | Oct 6, 2011
Two genome-wide studies, backed up by field experiments, identify SNPs that correlate with Arabidopsis fitness in various climates.
Evolution, Tout de Suite
Richard P. Grant | Oct 1, 2011
Epigenetic perturbations could jump-start heritable variation.
Marauding Moths
Jessica P. Johnson | Oct 1, 2011
Dried plant specimens reveal the origin of an insect pest that has spread throughout Europe.
Beyond Nature vs. Nurture
Darlene Francis and Daniela Kaufer | Oct 1, 2011
Researchers studying differences in how individuals respond to stress are finding that genes are malleable and environments can be deterministic.
Beetles Stay True to Their Colors
Cristina Luiggi | Sep 30, 2011
Fifteen to 47-million-year-old fossil beetles have retained their structural colors almost intact.