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...intelligence, but not at the level of a genius; initiative – a combination of independence, inventiveness and an urge to get things done; self-assurance – a blend of self-confidence, self-esteem and high personal expectations. Clearly, while these are important characteristics, they do not provide the clear-cut distinction between good and bad leaders sought by the...

...artificial dyes. The first had been discovered in 1856. And soon, people went dye crazy. His favourite colour was methylene blue. And with this, he made a remarkable discovery, one which would set him on the path to medical greatness. MICHAEL MOSLEY: When Ehrlich added a drop of methylene blue to tissue infected with bacteria, he noticed something astonishing-- only the...

...artificial. No, we began launching artificial satellites into orbit around the Earth in 1957. But satellite describes anything that orbits something else. Technically, the planets, comets, asteroids, and so on are all satellites of the Sun. But we tend to reserve the term for objects going around things that go around the Sun. The Moon is the Earth’s only natural...