Adam Roberts' incomparable versions of Vergil's Ecologues are wise, witty, reeking, rollicking, knurled, greenly flourishing, leaking and shimmering with fusions and fissions. These zephyrs have the guts to zigzag when requisite to give it to us straight. "Nature is always the resource that has always already been worked. The landscape is not 'nature'; it is what cultivation has made of the natural resource. Nature is worked, and therefore...