Problems of the apes

Problems of the apes

Bad feet? Aching back? Impacted wisdom teeth? Blame balky designs inherited from your relatives. How has evolution equipped — or 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 »

Biology as engineer

Biology as engineer

Long ago, nature devised the hinge and ball and socket for appendages like legs and wings. The screw is the latest simple machine to 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 »

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 »

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 »

Electric eye learns from animal eye!

Lenses cannot project a perfect image on the flat back of a camera, so images are distorted at the edges. A revolutionary camera solves 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 »

Gene therapy: Success at last!

After decades of effort, gene replacement brings eyesight to the blind. How did it work? What does animal research say about gene More »

Dolly the clone: 10 years later

In 1997, Dolly was BIG NEWS. What did Dolly teach? Why did cloning attract so many oddballs, and what is the status of reproductive More »