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The eruptionIn April 1815, a mountain called Tambora, on an island in what is now Indonesia, blew itself apart. It was the largest volcanic eruption anybody had recorded. The sound was heard sixteen hundred miles away.
The eruption threw an enormous quantity of ash and sulfur high into the atmosphere, far above the height at which rain forms. Because rain could not wash it out, a fine veil of particles spread slowly around the whole planet and stayed there for months, reflecting part of the sunlight back into space before it could reach the ground.
A summer that did not comeThe following year, 1816, was cold everywhere. In June, snow fell in New England. Frost killed the corn in Vermont in July and again in August. In Europe, it rained through the whole summer, and the harvest rotted in the fields.
What is lost when you drop the causes from this passage?