Michael Bleiweiss is Vice President of the Boston Ethical Community.

The earth has existed for 4½ billion years and it’s been a very busy planet. Continents have formed and broken up and formed again. Millions of species of living things have come and gone. Eventually, one species capable of understanding this history evolved. This three-part lecture series will explore our knowledge of this history. The first part will take us from earth’s formation up until the appearance of the first reptiles.