Reuters: We venture out at dawn from a dilapidated shack nestled in a forest to see the animals, although rising early is not always necessary. Still inhospitable to humans, the Chernobyl “exclusion zone” — a contaminated 30-km (19 mile) radius around the site of the nuclear reactor explosion of April 26, 1986 — is now a nature reserve and teems with wolves, moose, bison, wild boars and bears. Boars, which generally confine their sorties to dusk, plunder what remains of gardens in the …