Biosensor it affects marine organisms, especially plankton (floating microorganisms) and viruses that attack plankton. Plankton form the base of the marine food chains and are believed to affect our planet's temperature and weather by uptake of CO for photosynthesis. Deneb Karentz, a researcher at the Laboratory of Radio-biology and Environmental Health (University of California, San Francisco) has devised a simple method for measuring ultraviolet penetration and intensity. Working in the Antarctic Ocean, she submerged to various depths thin plastic bags containing special strains of "E. coli" that are almost totally unable to repair ultraviolet radiation damage to their DNA. Bacterial death
Food and drink in Birmingham A notable development of eating out in Birmingham occurred in August 2012 with the establishment of the "Digbeth Dining Club" (DDC) by the former cameraman Jack Brabant. On a weekly basis a street food market is held at Unit 2 Lower Trinity Street on Friday evenings from 5PM. On 17 and 18 September 2016 the British Street Food Annual Awards was held at the site. From January 2017 the DDC was held two evenings per week, Fridays and Saturdays, with the emphasis on Saturdays being on music and street entertainment. Birmingham has numerous restaurants which are parts of nationwide chains.