If Mother Nature has a double-edged sword in her arsenal, it undoubtedly is the volcano. At one turn, these lava-spewing maws are incomprehensibly destructive, capable of explosively tearing chunks ...

In the predawn darkness, a team of scientists climbs the slope of Mexico's Popocatépetl volcano, one of the world's most active and whose eruption could affect millions of people. Its mission: figure ...