Darwin started his Study on Natural Selection in 183, when he joined an expedition on the HMS beagle, an around the world ship. In 1844, Darwin wrote the first paper explaining his theory on evolution, which was published in 1858. This essay will include the four main points of natural selection...

New Discoveries in Biogeography About thirty years ago, two men, Robert H. MacArthur and Edward O. Wilson began a journey to test a theory of biogeography. They developed their theory by observing how on an island when one species of ant becomes extinct, a new one replaces it. From this they c...