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The earth’s surface measures about 200 million square miles, of which 60 million is land. As late as AD 1400, the vast majority of farmers, along with their plants and animals, clustered together in an area of just 4.25 million square miles – 2 per cent of the planet’s surface.
Sapiens
Yuval Noah Harari
Perhaps if more people were aware of the First Wave and Second Wave extinctions, they’d be less nonchalant about the Third Wave they are part of. If we knew how many species we’ve already eradicated, we might be more motivated to protect those that still survive.
Sapiens
Yuval Noah Harari
In order to understand how thousands of isolated cultures coalesced over time to form the global village of today, we must take into account the role of gold and silver, but we cannot disregard the equally crucial role of steel.
Sapiens
Yuval Noah Harari
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