Six Ice Ages in One Billion Years, Climate Change, and Boston’s Earthquake Problem

The Arnold Arboretum welcomes James Lawford Anderson, Boston University, who will give a special lecture on the various ice ages, today’s climate, and Boston’s glacially-influenced earthquake problem.

Our planet has experienced six ice ages in the last billion years. The first two at about 800 and 600 million years ago may have covered all or most of the earth in ice and is referred to as the "Snowball Earth". The most recent Pleistocene ice age, perhaps not done, involved over 16 glacial cooling and warming events over the past 2.5 million years.

Fee: Free member and student, $5 nonmember.

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