More than a dozen countries are on alert for potential tsunami activity after the world’s sixth-biggest earthquake hit eastern Russia. The 8.8 magnitude earthquake that struck Russia’s Kamchatka Peninsula on Wednesday morning has already resulted in the first tsunami waves on Japan’s Hokkaido coast, while residents in Hawaii have been advised to move to higher ground amid blaring tsunami sirens. Much of the West Coast, Alaska, and countries in the Pacific have also received tsunami alerts of