Yukon Territory

Congress debates oil drilling in largest U.S. wildlife refuge

The plain provides food and a vantage point from which caribou can spot predators from far away. But beneath the lichens and cotton grass, there’s a hidden resource: crude oil.ANCHORAGE, Alaska — Sometime next April, pregnant cows in the Porcupine Caribou Herd in Canada will take the lead in an annual migration of nearly 200,000 animals north to Alaska. From…