In his work on biology, he avoided the effort to treat biological entities by the use of rigid formal logic, and, though he made some inevitable errors in fact, his pragmatic approach has served as a model for biological observation ever since.From long before the time of the ancient Greeks, human beings were generally recognized as members of the animal world.Think of it like a teaspoon of cocoa mixed into a cake dough—after a while, the ‘ratio’ of cocoa to flour particles would be roughly the same no matter which part of the cake you sampled.The fact that the C doesn’t matter in a living thing—because it is constantly exchanging carbon with its surroundings, the ‘mixture’ will be the same as in the atmosphere and in all living things.In the 4th century BC, the Greek philosopher Plato somewhat flippantly defined "man" as an erect and featherless biped.Subsequently Diogenes the Cynic, in an equally flippant fashion, displayed a plucked chicken and declared, "Here is Plato's man." Plato's student, Aristotle, also was concerned with verbal definitions and distinctions, but he went on to describe the natural world in a matter-of-fact fashion that has earned him recognition as the founder of the biological sciences.The earliest definitely human remains found in Australia are those of Mungo Man LM3 and Mungo Lady, which have been dated to around 50,000 years BP.
It came as something of a surprise when scientists determined that human beings share almost 99 percent of their genetic material with chimpanzees.
Ever since the end of the Middle Ages (which coincides with the beginning of the Protestant Reformation in the early 16th century), some Christians have had problems accepting the teachings of science.
The origins of modern scientific thought go back to the Renaissance, when people rediscovered the teachings, art, and thought of the ancient Greeks and, of equal importance, began to see the importance of thinking for themselves, outside the restrictions of external authority structures.
He was familiar with the work of Copernicus, and his own studies confirmed the heliocentric (sun-centered) view of the solar system.
However, in 1616 he was forbidden from teaching the truth of the Copernican view, though he was allowed to teach it as a hypothesis.