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...works, or proposing a new universal phonetic alphabet, Young was experimenting with the diffraction of light by narrow apertures and the interference of light due to reflection by thin films. His observations of coloured fringes in these experiments demonstrated that light must travel from place to place in the form of a wave, and the different colours comprising white...

...work together more effectively. While these voluntary approaches to counteracting negative effects work in many situations, sometimes we need the full might of the state in order to ensure that harm is not done and that society and the economy operate in the way intended. The mechanisms used by the state are the law, and law enforcement. Look at Case study 1. Case study...

...work, many people have registered differences in behaviour in a wide range of species, which we cannot attribute to these two factors. For example, the detailed genetic work of Michael Kruetzen and his team has helped to dispel the “hardwiring” argument for tool use in dolphins. Cultural differences are something we pick up from others and pass on, it is a social...