US election: Questioning the candidates. Interview by Alexandra Witze.
Obama
Barack
B
D053595:Embryonic Stem Cells; D004641:Emigration and Immigration / Q000331:legislation & jurisprudence; D035082:Federal Government; D017752:Greenhouse Effect; D006801:Humans; D013026:Space Flight / Q000639:trends; D011795:Surveys and Questionnaires; D013672:Technology / Q000639:trends*; D014481:United States