A neural network active when the brain is at rest may prove critical to zoning out, a sense of self and envisioning the future. (p. 16)

A closer look at regeneration in axolotl amputees shows that tissue replacement relies on cellular “memory.”

Scientists in Japan have successfully introduced a foreign gene into a primate species for the first time, opening a new avenue for modeling human diseases, particularly brain disorders. (p. 13)

Detailed genetic analysis of the H1N1 swine flu virus indicates that its components have been present for years. The virus is still susceptible to drugs and vaccine development. (p. 12)