The cluster of exams that make up the Knowledge take three or even four years to finish. Cabbies must know how to navigate 26,000 streets encompassing a six-mile circle around Charing Cross, the heart of London, in order to earn full licensure and a coveted green badge

Athazagoraphobia. The fear of forgetting someone or something, as well as a fear of being forgotten. For example, you or a loved one may have anxiety or fear of developing a Dementia Related Disorder, like Alzheimer's Related Dementia.