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Animals can quickly adapt to changing environmental conditions that impact their food supply. For example, in recent studies of Galapagos finches during a severe drought, small-beaked finches largely died out, because large and hard seeds became dominant. The surviving finch population had measurably larger beaks in one year. It took 15 years of normal conditions for finch beaks to return to their pre-drought length. Wrangham argued that the biological changes attending cooked food would have been immediately evident, and anatomy presented the most dramatic changes seen in the human line. The only other plausible candidate would have been , but it was only a more robust version of .
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Essay on domestic animals in english.
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England had nearly a century’s head start on the competition with its Industrial Revolution, which is why it became the world’s triumphant imperial power, to be later supplanted by its offspring and rival, the USA. Turning coal into an industrial fuel, for smelting iron and powering machines, initiated the Industrial Revolution, and the next big innovation was making machines to replace hands. English inventors , and the 1760s and 1770s were the golden age of spinning innovation, and the , , and were all invented. By the 1790s, people using such machines . I call one worker with a machine outperforming 150 people without one an energy-and-technology-leveraged human. Energy-powered technology allowed a person to vastly outperform humans without it. Was that person 150 times more dexterous? Smarter? Faster? Stronger? The machine did the work, not the person, and energy made it all happen, not the equipment. Without energy to run it, machinery is useless, but without human-made technology, the energy was unavailable. Such machines would never have been without the available energy to run them. Those early spinning machines ran on water power from the .
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By the early 1700s, and other writers began openly challenging the Church and began arguing for freedom as everybody’s birthright, and the began. Voltaire spent his first stint behind bars in 1717 for his satirical writings. Some have placed the Enlightenment’s beginning in the 1600s, with the feats of and Newton, but as with many other movements, their beginnings were modest. Not until about 1750 was the institution of slavery, hallowed for several thousand years by that time, challenged for the first time on universal grounds. In 1315, France’s , but as France joined the colonial competition, it relied on slave labor for its Caribbean plantations. Ironically, in a French colony, Haiti, although the victory was pyrrhic in ways, as that former slave colony is the .
Energy and the Human Journey: Where We Have Been; …
As with the previous Epochal Events (, , ), imagine an English peasant of 1500 being placed in the midst of London in 2014, or visiting today's average American home. The only metal in an English home of 1500 might have been some tools and eating utensils. Wood and wool were the primary materials in an English home. Some metals of the modern world would be vaguely familiar, but plastic would be unrecognizable. English peasants’ homes had thatched roofs, dirt floors, no plumbing, and people rarely bathed. Glass windows only existed in rich homes, which were built like fortresses. London was a walled city in 1500, and nobody went outside after dark if they valued their lives. Sewers did not yet exist, and violence and capital punishment were common. In England in 1500, only 1% of women were literate and only 10% of men. About half of all people died before adulthood, and if they survived that long, they could expect to live into their early 60s if they were lucky. Few made it to 70. Only rich people were fat. Strangers roaming the countryside could legally be enslaved. Modern appliances and machines would all be incomprehensible, and all electronic devices would seem magical. How much of a modern TV show would be understandable? Cars, trains, airplanes, and rockets would be mind-boggling. By 1500, news would have filtered into learned circles that Spain discovered some Atlantic islands, but nobody yet suspected that new continents had been discovered. The telescope would not be invented for another century, Earth was seen as the center of the universe, and the . Imagine trying to explain the Apollo moon landings to that peasant, if the peasant did not regard it as some fairy tale (many people ). Could an English peasant from 1500 dropped into 2014 London have ever adapted?