Professor Laird Close looks at how common simple life and intelligent life are in the universe. He argues that the best answer to this question involves looking at the history and diversity of life on Earth. He looks at the Rare Earth ...See moreProfessor Laird Close looks at how common simple life and intelligent life are in the universe. He argues that the best answer to this question involves looking at the history and diversity of life on Earth. He looks at the Rare Earth theory which argues that intelligent life in the universe may be rare even if microbial life in the universe is common. Written by
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