Archive of articles published on the 31st of May 2012

X-ray 'echoes' map a supermassive black hole's environs
Cosmic calculations
New small solid oxide fuel cell reaches record efficiency
Vertebrates share ancient neural circuitry for complex social behaviors, biologists find
Genetic discovery unlocks biosynthesis of medicinal compound in poppy
Building molecular 'cages' to fight disease
Alzheimer's protein structure suggests new treatment directions
Rice students invent slingshot-driven test for Air Force
A new tool to attack the mysteries of high-temperature superconductivity
Predicting burglary patterns through math modeling of crime
We need to talk: How cells communicate to activate notch
Catching solar particles infiltrating Earth's atmosphere
On early Earth, iron may have performed magnesium's RNA folding job
Sex: It's a good thing
Dark chocolate could prevent heart problems in high-risk people