How Life Began - Alexandre Meinesz
How Life Began - Alexandre Meinesz
Lecture of February 23, 2009
Where does life come from? How did it appear on Earth? What were the first living organisms? What did the ancestors of today's life forms look like? How has evolution shaped life over time? Alexandre Meinesz will present a synthesis of the most recent discoveries on the history of life. He will distinguish three major innovative stages, or Genesis events: that of the first bacteria, that of the first animal and plant cells, and that of organisms composed of several cells (including ourselves). He will also discuss four types of chance events that profoundly shaped the history of life on Earth: three "creative" events (mutations, sexual reproduction, and natural selection), and a fourth destructive one (major cataclysms such as the one that wiped out the dinosaurs 65 million years ago).
Alexandre Meinesz, a specialist in marine environments and the first organisms to colonize Earth (algae), will address the mysteries of life with an original perspective on the evolution of living things, different from that of microbiologists, geneticists or paleontologists. He will enrich his presentation with his experiences as a man of the field, curious about everything and madly in love with nature… and with a painting, Vermeer's The Astronomer, which serves as the framework for his story…
Source: Canal U
https://www.canal-u.tv/
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