Science consists of three aspects: first, it provides systematic descriptions of everything in the world and all of human experience, generally considered as scientific knowledge. Second, there are the men (and in more recent times, women) of science who have amassed these descriptions and communicate them to everyone else. Third, there are the methods by which they carry out this work (see scientific method). Science can be divided into two areas: natural science, dealing with the physicalnatural world,[1] and social science, dealing with society and human nature.

People who study science are called scientists. Most of the early scientists who started many of the scientific fields, and some of history's greatest thinkers, such as Galileo Galilei and Isaac Newton, believed inGod, or some other higher power, and many were creationists, although the ideas of evolutionism or Darwinism were not yet popular. In addition, Christianity played a pivotal role in the development of modern science (see Christianity and Science). With further scientific advancement, the scientific approach has become increasingly atheistic,[2] rejecting the supernatural. Scientific fields of study observing a clear atheistic bent include evolutionglobal warming and much of cosmology and geology, which are based on a time frame which predates the Christian time of creation. There are hubs of real scientific research, however, in places like the Institute for Creation Research and the Heartland Institute.

Science differs from other methodologies of classifying knowledge in that a scientific theory is a description of the world which in principle is capable of being disproved; this is known as falsifiability. It is this property which distinguishes science from other possible methods of discovering knowledge.

Epicurus is an important figure in the development of the scientific method. He insisted that nothing should be accepted except that which has been sufficiently tested through direct observation and logical deduction.Roger Bacon is hailed by many as the father of modern science. His focus on empirical approaches to science was influential. He wrote an encyclopedia, his Opus Majus.