News & Comment

In this special issue of Nature Neuroscience, we feature an assortment of reviews and perspectives that explore the topic of learning and memory.

There is disagreement on how best to define and investigate fear. Nature Neuroscience asked Dean Mobbs to lead experts from the fields of human and animal affective neuroscience to discuss their viewpoints on how to define fear and how to move forward with the study of fear.

On April 13, the neuroscience community lost a remarkable scientist and true humanitarian. Paul Greengard, co-recipient of the Nobel Prize in Physiology or Medicine in 2000, Vincent Astor Professor and head of the Laboratory of Molecular and Cellular Neuroscience at the Rockefeller University in New York City, died of an apparent heart attack at age 93. Paul will be remembered for his seminal contributions to neuroscience, for pioneering the field of neuronal signal transduction and for training hundreds of neuroscientists. For anyone who knew Paul it will come as no surprise that up until a few hours before his death, Paul was doing what he liked the best: working on a scientific manuscript.