July 31: The deterioration of motor skills in Parkinson's patients is driven by the decline of dopamine production, but researchers in Japan are making exciting progress on a way to potentially arrest the slide. Following promising experiments on monkeys last year, scientists at Kyoto University are now preparing to begin transplanting reprogrammed stem cells into human brains as part of a first-of-a-kind clinical trial.

July 28: Many reptiles and amphibians boast impressive tissue regeneration abilities. But only geckos are known to be able to grow new neurons.

CHICAGO, July 8: Research in mice at the Washington University School of Medicine in St. Louis shows that genetic material can be delivered to damaged cells in the kidneys.