Odors evoke powerful memories, an experience enshrined in literature by Marcel Proust and his beloved Madeleine. A new article is the first to identify a neural basis for how the brain enables odors to so powerfully elicit those memories. The paper shows unique connectivity between the hippocampus -- the seat of memory in the brain -- and olfactory areas in humans. It's like a superhighway from smell to the hippocampus.