Male squirrel monkeys with red-green colorblindness can distinguish the hues after gene therapy, study suggests. (p. 14)

Instead of becoming obese, mice with a mutation in an immune gene burn off the fat they eat. (p. 9)

Tasmanian devils all know each other, a new study shows. The discovery could mean that stopping the spread of an infectious cancer will be harder than previously thought.

New study finds calorie restriction delays age-related diseases in monkeys. Another study reports that an immune-suppressing drug helps elderly mice live longer. (p. 9)

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.” (p. 10)