Palaeontology: Dinosaurs take to the air Flying birds evolved from a group of bipedal dinosaurs. The latest fossil discoveries from China indicate that the dinosaurian ancestors of birds had four wings and that these animals glided rather than flapped

Neurobiology: Fear thou not Mice lacking a certain neurotransmitter receptor have trouble forgetting scary experiences. This finding uncovers a fear-regulating feedback loop in the brain that might be at work in humans, too

Inflammation: A nervous connection the molecular details of a connection between the nervous system and the inflammatory r response to disease have been uncovered. This suggests new avenues of research into controlling excessive inflammation