'Lower global temperatures in the early '90s may be traced back to ash from this volcano'
Mt. Pinatubo
SET UP THE PINS: Lower global temperatures in the early '90s may be traced back to ash from this volcano
Lower global temperatures in the early '90s may be traced back to ash from this volcano
Lower global temperatures in the early '90s may be traced back to ash from this volcano
SET UP THE "PIN"S
Mt. Pinatubo
SET UP THE "PIN"S