Akeman Street Kirtlington also uses its course. Other parts are in use as public footpaths, including a stretch between Tackley and Stonesfield that is part of the Oxfordshire Way. The origins of the road's name are uncertain but certainly date back to the Early Middle Ages. Some have suggested that "Akeman" derives from the Anglo-Saxon words for "oak-man". Others have suggested a connection with Bath, which the Anglo-Saxons called "Acemannesceastre" ("Acemannes" apparently being derived from the Roman name Aquae Sulis). It is unclear how this might have become associated with the road, but one possibility is that the name was originally used
Aphanizomenon flos-aquae toxic chemicals released when cells die. Once released (lysed), and ingested, these toxins can damage liver and nerve tissues in mammals. In areas where water quality is not closely monitored, the World Health Organization has assessed toxic algae as a health risk, citing the production of anatoxin-a, saxitoxins, and cylindrospermopsin. Dogs have been reported to have become ill or have fatal reactions after swimming in rivers and lakes containing toxic "A. flos-aquae". Microcystin toxin has been found in all 16 samples of "A. flos-aquae" products sold as food supplements in Germany and Switzerland, originating from Lake Klamath: 10 of 16