Encyclopedia of Earth: Evolutionary Biology: Extremophile

Scientific article discussing the evolutionary processes involved when an insect species splits into two other distinct species. (Published: February 28, 2011)

A large collection of scientific articles, news items, and images on a wide range of topics in the field of conservation biology.

Article describing the Pleistocene Epoch, which lasted from 1.8 million to about 10,000 years ago. It discusses species that lived then (e.g., the mammoth), and the climate changes that took place at that time. (Published: May 8, 2010)

Article explaining what organisms are, their cellular foundation, and how they get their energy and nutrition. (Published: May 26, 2010)

Article describes the different types of symbiosis, some of which are of mutual benefit, and others not. It also explains the differences between endosymbiosis and exosymbiosis, where one organism lives either inside or else upon the...

Article explaining the basic characteristics of mammals, their diet, reproduction, behavior, conservation concerns, taxonomy, and their evolution. (Published: September 23, 2010)

Article discusses the science of epigenetics, where gene activity can be changed by factors other than genetic code, for example, by environmental pollutants. (Published: August 22, 2011)

A biography of Charles Darwin.

Information about amphibians, animals that can survive in a wide variety of habitats and cli-ates. The article discusses their behavior, diet, predators, conservation status, and evolution. (Published: August 29, 2008)

A discussion of the structure and types of amino acids, and of how they combine to form proteins. (Published: October 16, 2010)