Keep within a water budget. Learners find out that less than 2.5% of Earth's water is available to drink—and that there is a fixed amount of water. Scholars read an interesting article comparing the available water to a game of Monopoly...

This is an article on how philosophy can be used in the study of social sciences such as sociology and psychology. The nature of social sciences and how they differ from the natural sciences is also explored.

The aim of this article relates the nature of science to our current understanding of the origin of life and describe the formation of the atoms which build the Earth and its life.

The American Institute of Biological Sciences offers this article by Niles Eldredge, evolutionary theorist and curator at the American Museum of Natural History. Eldredge begins with Darwin's theories and summarizes subsequent thought,...

From ABC News in Science, Jennifer Viegas's article covers results from a recent study in which a female bonnethead shark was able to reproduce without the presence of a male shark.

A brief biography of American astronomer and science advocate Carl Sagan.