Travelers to certain cities in Japan are receiving a warning about a volcano and "ash clouds" from the U.S. government. The U.S. Embassy & Consulates in Japan issued the travel alert on November 20.

A volcano that has remained silent for over 700,000 years is showing signs of waking up. Mount Taftan is a stratovolcano situated in southeast Iran, close to the border with Pakistan. Due to its long ...