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Lecture 20: The History of Life on Earth
In this lecture we step back and look at the history of life on Earth
from the first signs of life at start of the Archaean Eon 3.5 billion
years ago to just up to the present day. We will review the appearance
of photosynthesis and the rise of oxygen in the atmosphere in the
Proterozoic, the appearance of the first eukaryotes and sexual
reproduction, and the Cambrian explosion of plant and animal species at
the start of the Phanerozoic Eon, and briefly review the changes in life
to the present day from the Cambrian Explosion to the colonization of
land by plants and then animals. Most of the lecture will be where most
of the time was spent, in the early, microbiological Earth. Recorded
live on 2009 Oct 21 in Room 1005 Smith Laboratory on the Columbus campus
of The Ohio State University.
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By Richard PoggeIn this lecture we step back and look at the history of life on Earth
from the first signs of life at start of the Archaean Eon 3.5 billion
years ago to just up to the present day. We will review the appearance
of photosynthesis and the rise of oxygen in the atmosphere in the
Proterozoic, the appearance of the first eukaryotes and sexual
reproduction, and the Cambrian explosion of plant and animal species at
the start of the Phanerozoic Eon, and briefly review the changes in life
to the present day from the Cambrian Explosion to the colonization of
land by plants and then animals. Most of the lecture will be where most
of the time was spent, in the early, microbiological Earth. Recorded
live on 2009 Oct 21 in Room 1005 Smith Laboratory on the Columbus campus
of The Ohio State University.
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