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welcome to the home of the national academies of sciences, engineering, and medicine (nasem)

welcome to the home of the national academies of sciences, engineering, and medicine (nasem)

the center for global development works to reduce global poverty and improve lives through innovative economic research that drives better policy & practice.

proceedings of the national academy of sciences (pnas), a peer reviewed journal of the national academy of sciences (nas) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.

science.gov is a gateway to government science information provided by u.s. government science agencies, including research and development results.