The benefits of watching

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 »

Giving the ultimate gift

Giving the ultimate gift

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 »

Spinal cord injury

dark grey illustration of section of spinal cord with labelled sections

A combined nerve-graft and enzyme treatment restored breathing to 9 of 11 rats. The bacterial enzyme dissolves a molecule that More »

Maggots, leeches, parasitic worms

Maggots, leeches, parasitic worms

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

A strike against stroke?

A strike against stroke?

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

Traumatic brain injury

Traumatic brain injury

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

Stem cell battle resumes

Black and white image of woman in wheelchair seen from the back in a hospital hallway

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

Growing limbs, healing limbs

Closeup of front of small pink salamander, small dark eyes, tiny limbs, six pink protruding fins.
Salamanders and fish can regrow perfect limbs and fins after amputation. We can’t grow a replacement arm, but can the salamander’s More »

Microbial bliss

Microbial bliss

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

Embryonic stem cells

Embryonic stem cells

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 »

Overcoming paralysis

Overcoming paralysis

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