Last week, Pres. Obama revoked the limits on studies of cells that can become any body cell. What was lost in eight years of limits on embryonic stem cells? What’s ahead?

Did the arrival of 4,000,000,000,000,000,000 tons of space junk start the formation of organic molecules roughly 4 billion years ago? “Could be,” says a new study from Japan…

The discovery of human embryonic stem cells seemed to offer cures for horrific diseases. After 10 years of research, was that hype? Where are the cures from stem cells?

Lenses cannot project a perfect image on the flat back of a camera, so images are distorted at the edges. A revolutionary camera solves this problem by curving the light detector.

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

After decades of effort, gene replacement brings eyesight to the blind. How did it work? What does animal research say about gene therapy for curing cancer, reducing pain or reversing muscular dystrophy? Why has gene therapy taken so long?

Scientists learn to make human embryonic stem cells without using eggs, embryos, or legal hassles. Adding four genes to skin cells did the trick.

In 1997, Dolly was BIG NEWS. What did Dolly teach? Why did cloning attract so many oddballs, and what is the status of reproductive cloning and therapeutic cloning? The Why Files honors Dolly with a 10-year lookback.

New electronics, new sensors and new electrodes promise new hope for people with grave nerve disabilities. Replacements for both sensory and motor nerves have long ago left the drawing board.

Think all socks are created equal? Think about socks at all? A few scientists that think with their feet say choosing the right pair of socks is a major feat. Indeed!