As a part of the Republican tax overhaul bill, Congress voted  to open Alaska's Arctic National Wildlife Refuge (ANWR) to oil and natural gas drilling, after more than four decades of contestation on the matter. Drilling is still years away at best, due to depressed oil prices, a lengthy review process, and likely legal challenges. But oil companies are already arguing over who will have rights to the reserve—while Native Alaskan communities that depend on its critical caribou habitat see impending cultural extermination. (Photo: FWS)