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The complete history of the Universe -- from the Big Bang to 200 my into the future

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History of the Universe eBook. 398 pages, 300 illustrations only $2.99

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Atmosphere

Following the Great Oxygen Poisoning of 2400 mya, the atmosphere became richer in oxygen until it reached the high level we find in the air today. This might have been the reason why, around 700 mya, amazing things began to happen to protozoa.

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History of the Universe eBook. 398 pages, 300 illustrations only $2.99

eBook only $2.99
398 pages, 300 images

"I find the science fabulous...an extremely useful teaching tool."
Professor David Christian

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