| http://www.w3.org/ns/prov#value | - y's greatest challenge / James Hansen -- Global warming is a myth / Ed Hiserodt -- The threat of nuclear proliferation must be addressed / George P. Shultz ... [et al.] -- The threat of nuclear proliferation is exaggerated / William Langewische, interviewed by James Marcus -- The problem of global poverty is improving / Howard LaFranchi.
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