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Finding Form

Biologist Sean Carroll maintains a site devoted to the genetics of animal body designs and evolution. Read about advances in the emerging field of evolutionary developmental biology and watch brief movies of embryo formation in fruit flies, butterfly wing development, and other natural wonders. Go to: http://www.molbio.wisc.edu/carroll/index.html

Babies Prune Their Focus: Perception narrows toward infancy’s end

Between the ages of 6 months and 8 months, infants lose the ability to match the vocalizations and facial movements of monkeys shown in video clips, signaling a temporary perceptual narrowing as babies focus on the human social realm.

Picking Pathways: Small molecule boosts morphine effect

Some small molecules affect specific pathways in one of the body's most common cell-regulating systems.