Changing Human Behavior

Source: By Nabokov (talk) Required photo citation:- "Photo by Tom Oates, 2008" (Transfered byBhagyaMani/Original uploaded by Nabokov) - I created this work entirely by myself. (Original uploaded on en.wikipedia), CC BY-SA 3.0, OpenStax Biology 2e Legislation throughout the world has been enacted to protect species. The legislation includes international treaties as well as national … Continue reading Changing Human Behavior


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

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

Climate Change

Since 2008, grizzly bears (Ursus arctos horribilis) have been spotted farther north than their historic range, a possible consequence of climate change. As a result, grizzly bear habitat now overlaps polar bear (Ursus maritimus) habitat. The two species of bears, which are capable of mating and producing viable offspring, are considered separate “ecological” species because historically … Continue reading Climate Change

How Organisms Acquire Energy in a Food Web

Swimming shrimp, a few squat lobsters, and hundreds of vent mussels are seen at a hydrothermal vent at the bottom of the ocean. As no sunlight penetrates to this depth, the ecosystem is supported by chemoautotrophic bacteria and organic material that sinks from the ocean’s surface. This picture was taken in 2006 at the submerged … Continue reading How Organisms Acquire Energy in a Food Web


An EEG can aid in locating the focus of the epileptic seizure. Source: By Chris Hope -, CC BY 2.0, OpenStax Biology 2e Estimates suggest that up to three percent of people in the United States will be diagnosed with epilepsy in their lifetime. While there are several different types of epilepsy, all are characterized by recurrent … Continue reading Epilepsy

Mental Illnesses

Source: OpenStax Biology 2e Mental illnesses are nervous system disorders that result in problems with thinking, mood, or relating with other people. These disorders are severe enough to affect a person’s quality of life and often make it difficult for people to perform the routine tasks of daily living. Debilitating mental disorders plague approximately … Continue reading Mental Illnesses


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