IFC Films has acquired North American rights to “Biosphere,” the directorial debut of award-winning producer Mel Eslyn, which stars Sterling K. Brown and Mark Duplass, the company announced on Monday.Set in the not-too-distant future, Duplass and Brown play the last two men on earth who must adapt and evolve to save humanity.“Biosphere” premiered at the Toronto Film Festival in September to a strong audience response and enthusiastic reviews.The film was produced by Eslyn, artist/filmmaker Zackary Drucker—who previously co-directed the Duplass Brothers-produced docuseries “The Lady and the Dale”—and Duplass Brothers Productions’ Shuli Harel and Maddie Buis.