Is a Bolivian ‘zombie volcano’ about to awaken? Scientists explore why it’s showing signs of life

Uturuncu, a Bolivian ‘zombie volcano’ that hasn’t erupted in more than 250,000 years, has shown signs of life. But scientists don’t think those signs spell trouble.

​ Uturuncu, a Bolivian ‘zombie volcano’ that hasn’t erupted in more than 250,000 years, has shown signs of life. But scientists don’t think those signs spell trouble. Read More Breaking News, Latest News and Videos | CNN