On its 20th anniversary, we all relive the human and environmental tragedy that was the Exxon Valdez oil spill. But today, right now, Alaska faces down another threat that could devastate a $1.5 billion annual salmon fishery, endangered beluga whales, and coastline communities in the most densely populated area of Alaska, from Kodiak to the Kenai Peninsula, to Anchorage, and beyond.

Mt. Redoubt, a volcano which has awakened from slumber after...