The benefits of watching

A fascinating study taps “mirror neurons” to improve hand strength and dexterity. If I watch a movie of somebody cutting with scissors, More »

Stimulation: Too much could hurt when you are young.

Growing brains need blood. But persistent noise or activity both slow formation of new vessels in the brain of a mouse. Mice aren’t More »

Listing your Facebook status as “organ donor” seems to induce friends to sign up at organ registries. A new study finds a strong quick More »

Heart muscle is never replaced if it dies in a heart attack. Muscle cells grown from stem cells can briefly help broken hearts. Could More »

A combined nerve-graft and enzyme treatment restored breathing to 9 of 11 rats. More »

Meet three gross “biotherapies”: Leeches suck blood after surgery. Maggots clear dead tissue from wounds. Parasitic worms fight More »

Aware that a small amount of function often returns after a stroke, neurologists have helped neurons recover after an experimental More »

Charges that NFL “deliberately and fraudulently concealed” … link between head impacts and brain damage. What is the science of More »

A federal court has thrown the field of embryonic stem cell research into confusion. Last week, research that destroys embryos could More »

Salamanders and fish can regrow perfect limbs and fins after amputation. Can the salamander’s natural regeneration teach us? More »

Scientists are proving that intestinal bacteria can help health — but for what conditions? Should you take probiotic supplements or More »

Pres. Obama has removed some limits on studies of cells that can become any body cell. What was lost in eight years of limits on More »

A single neuron in the brain may deliver enough information to control a muscle. These results could eventually help bypass the spinal More »

Activity is not just for the heart: For older people, it spells longevity, mobility, independence. More »

Brain electrodes allow monkeys to move robot arm and feed themselves. Experiment proves it’s possible to bypass spinal cord to create More »