A schizophrenic patient at the Glore Psychiatric Museum made this piece of cloth and it gives us a peek into her mind. Source: By cometstarmoon – originally posted to Flickr as Embroidered Schizophrenia, CC BY 2.0, OpenStax Biology 2e Schizophrenia is a serious and often debilitating mental illness affecting one percent of people in the United States. … Continue reading Schizophrenia


Source: OpenStax Biology 2e Major depression affects approximately 6.7 percent of the adults in the United States each year and is one of the most common mental disorders. To be diagnosed with major depressive disorder, a person must have experienced a severely depressed mood lasting longer than two weeks along with other symptoms including a … Continue reading Depression


An EEG can aid in locating the focus of the epileptic seizure. Source: By Chris Hope –, CC BY 2.0, OpenStax Biology 2e Epilepsy is a group of neurological disorders characterized by recurrent epileptic seizures. Epileptic seizures are episodes that can vary from brief and nearly undetectable periods to long periods of vigorous shaking. These … Continue reading Epilepsy

Altruistic Behaviors

Queen (marked) and workers of the Africanised honey bee, Apis mellifera scutellata. Source: By Scott Bauer, USDA Agricultural Research Service – This image is Image Number 1355021 at Insect Images, a source for entomological images operated by The Bugwood Network at the University of Georgia and the USDA Forest Service., Public Domain, OpenStax Biology 2e … Continue reading Altruistic Behaviors

The Role of Captive Breeding

Giraffes in the West Midland Safari Park. Source: By Robek – Own work, CC BY 2.5, OpenStax Biology 2e Zoos have sought to play a role in conservation efforts both through captive breeding programs and education. The transformation of the missions of zoos from collection and exhibition facilities to organizations that are dedicated to conservation is … Continue reading The Role of Captive Breeding

The Pleistocene Extinction

Source: OpenStax Biology 2e The Pleistocene Extinction is one of the lesser extinctions, and a recent one. It is well known that the North American, and to some degree Eurasian, megafauna—large vertebrate animals—disappeared toward the end of the last glaciation period. The extinction appears to have happened in a relatively restricted time period of 10,000–12,000 years ago. … Continue reading The Pleistocene Extinction

Population Research Methods

A scientist uses a quadrat to measure population size and density. (credit: NPS Sonoran Desert Network) OpenStax Biology 2e The most accurate way to determine population size is to simply count all of the individuals within the habitat. However, this method is often not logistically or economically feasible, especially when studying large habitats. Thus, scientists … Continue reading Population Research Methods