Preston Cloud

Preston Cloud

Preston Ercelle Cloud, Jr. (September 26, 1912 – January 16, 1991) was an eminent American earth scientist, biogeologist, cosmologist, and professor. He was best known for his work on the geologic time scale and the origin of life on Earth, and as a pioneering ecologist and environmentalist.

Read more about Preston Cloud:  Early Life, Professional Career, Personal Life, Awards

Famous quotes containing the word cloud:

    The cloud was so dark that it needed all the bright lights that could be turned upon it. But for four years there was a contagion of nobility in the land, and the best blood North and South poured itself out a libation to propitiate the deities of Truth and Justice. The great sin of slavery was washed out, but at what a cost!
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