Antisocial personality disorder is a mental illness characterized by a person in adulthood lacking in empathy and unable to show remorse. In everyday life and pop culture, the terms "psychopath" and "sociopath" are often used to refer to...

Check out award-winning photography from BlueSphere Foundation featured artist — and Scuba Diving Magazine's 2011 Sea Hero of the Year — Shawn Heinrichs, working in Tonga.

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