Russia's Kamchatka Peninsula is a land of superlatives. It is one of the most volcanologically active regions on Earth. It has the world's densest population of brown bears. Next to Yellowstone ...

Shiveluch, one of the most active volcanoes on Russia's Kamchatka Peninsula, erupted on Thursday evening, sending ash clouds up to 15 kilometers into the sky and blanketing large areas with dust.