Scientists and parents wonder whether tablets are all fun and games for toddlers.
AFTERMATH Intimate mating concerns among Anopheles mosquitoes may have inadvertently pushed the evolution of greater ability to spread human malaria.
FOLD IT A gene that only humans have can make the normally smooth outer layer of mouse brains develop folds similar to those in human brains (upper right center). The gene may have been important for the evolution of big human brains.
M. Florio and W. Huttner/Max Planck Institute of Molecular Cell Biology and Genetics