Genetic variation within the endocannabinoid system may explain why some survivors of childhood adversity go on to become dependent on marijuana, while others are able to use marijuana without problems, new Arts & Sciences research suggests.

Scientists at the School of Medicine have identified two chemical scents in the urine of female mice that arouse sexual behavior in males, a discovery that shines a spotlight on how mouse pheromones control behavior. The research is available online in the journal Cell.

In the wake of the terrorist attacks in Paris, at least two dozen American governors have expressed concern over allowing Syrian refugees to relocate in their states. While state governments often play a small role in helping resettle refugees, governors don’t have much choice in this case, said immigration law expert Stephen Legomsky, JD, DPhil.