The Report is a collaborative effort by 145 authors from 50 countries,[6] produced over a three-year period and supported by some 310 authors' contributions.[7] The Global Assessment Report comprises some 1,700 pages[6] evaluating over 15,000 scientific publications and reports from indigenous peoples.[3] The Report's authors are predominantly natural scientists, one-third are social scientists, and about ten percent are interdisciplinary workers.[6]