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In six months , the computers will churn through 250 terabytes of data-enough to fill a stack of CDs as high as France 's Eiffel Tower . Matching arsenic levels in the urine samples to the variations in the genes , the researchers noted that the distribution of arsenic metabolites differed in urine samples from people with a certain variation of the CYT19 gene . For example , in a simple signal system that does not interface with ramp meters , the aspects of the regional ITS architecture that address freeways are not relevant . Although academics who have conducted research with members of the public report challenges in negotiating research timetables , cultural differences , and power disparities with their lay colleagues , the scholars often say they believe that the collaboration improves the quality of their research . If some scientists fear a scarcity of career rewards for treating communities as equal partners in their research , local leaders say that for communities , the rewards of traditional academic studies are clearly lacking .