Among other factors, a person's access to media technology affects the amount and quality of his or her intake.[18] In the United States, for instance, "U.C. San Diego scientists in 2009 estimated the 'average' American consumes 34 gigabytes of media a day."[19] The amount of media consumption among individuals is increasing as new technologies are created. According to phys.org, a new study done by a researcher at the San Diego Supercomputer Center at the University of California, says that by 2015, the sum of media asked for and delivered to consumers on mobile devices and their homes would take more than 15 hours a day to see or hear,[20] an amount equivalent to watching nine DVDs' worth of data per person per day.[20]