Dozens of trainee drivers had MRI scans before and after they memorized hundreds of journeys and street names.
The University College London team found brain parts linked to memory grew bigger and said it proved the brain could adapt to new tasks, even in adulthood. Compared with similar scans from non-taxi drivers, those who had attempted the Knowledge had increased the size of the posterior hippocampus - the rear section of the hippocampus which lies at the front of the brain.
We have seen similar studies come out in the past, and they always receive significant press attention. This week, there were articles on the BBC, in the Mirror and U.S. News and World Report.