South Korean researchers make a promising advance in stem cell therapy.

A South Korean woman paralyzed for 20 years is walking again after scientists say they repaired her damaged spine using stem cells derived from umbilical cord blood.

“Have you ever looked at an ape?” Dr. Bramble said. “They have no buns.”

What’s sets humans apart from other primates? We’ve got buns and we can run.

If walking upright first set early human ancestors apart from their ape cousins, it may have been their eventual ability to run long distances with a springing step over the African savanna that influenced the transition to today’s human body form, two researchers are reporting today.

The evolution of physiques for distance running made humans look the way we do now, whether winning a marathon, nursing a strained Achilles tendon or sitting on an ample gluteus maximus in front of the TV.

Endurance running, unique to humans among primates and uncommon in all mammals other than dogs, horses and hyenas, apparently evolved at least two million years ago and probably let human ancestors hunt and scavenge over great distances. That was probably decisive in the pursuit of high-protein food for development of large brains.

Hat Tip: Ann Althouse

Too cool. Powers of Ten zooms in from a view of the Milky Way down to a particular Oak tree in Florida. It then delves into a single Oak leaf, a cell in that Oak leaf, the nucleus of the cell, the DNA, a DNA nucleotide, the nucleus of a carbon atom in that nucleotide, and, finally, quarks within a proton.