* 12 Essential Scientific Concepts (24)

Cosmology. Neurology. Genetics. Chemistry. These are just a few of many fascinating branches of the scientific world ripe for exploration. But because science is such a vast arena of knowledge, people looking for a better grasp of its secrets often wonder where to begin. The answer: with the essentials.

Indre Viskontas
University of California, San Francisco - Ph.D., University of California, Los Angeles