‘A great sadness’: Venezuela is first Andean country to lose of all its glaciers

Scientists explain the loss of the Humboldt Glacier in Venezuela’s Sierra Nevada, which they believe makes the South American country the first in modern history to lose all its glaciers. Scientists explain the loss of the Humboldt Glacier in Venezuela’s Sierra Nevada, which they believe makes the South American country the first in modern history to lose all its glaciers.  NBC News Science