Thuso ea lidolara tse limilione tse 18 ho tsoa ho National Science Foundation e ke ke ea ts'ehetsa nts'etsopele ea lisebelisoa tse tsoetseng pele feela ka Univesithi ea Michigan empa hape e ikemiselitse ho bula mahlale a thepa ho batho ba bangata.
Setsi sa lisebelisoa ho Ann Arbor, Mich., kolecheng e tla hira bafuputsi ba tsoang holimo ...