1.   Scientists in Hawaii are exploiting the heat-sensing eyes of satellites to warn when dangerous volcanoes threaten to erupt.

2.   But the subterranean shifting has served as a reminder to Japanese that their majestic national symbol is also a potentially dangerous volcano.

3.   Experts consider Colima to be the most dangerous volcano in Mexico.

4.   Volcanologists consider Colima to be the most dangerous volcano in Mexico.