What is humanity´s greatest challenge? / Roman Espejo, book editor.

Incluye bibliografía.

Overpopulation is a global challenge / Morgan Winters -- The problem of overpopulation is exaggerated / Philip P. Eapen -- Global hunger must be addressed / Michele Learner -- The problem of global hunger is exaggerated / Gary Rethford -- The oil supply crisis could be humanity´s greatest challenge / Matthew Simmons -- The oil supply crisis is exaggerated / Tom Bethell -- Global warming is humanity´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.

Essays debate the significance of overpopulation, global hunger, climate change, nuclear proliferation, and poverty.