Brain Research in Addiction, Volume 235, the latest volume in this groundbreaking series on addiction, presents the neurobiological, pathological, cognitive and evolutionary aspects of addiction, with new chapters covering the Neurobiology of drug intake escalation, the Role of the orexinergic system in reward, Mental time travel and addictive behaviors, An evolutionary perspective on addiction- Addiction is the price we pay for innovation and adaptability, and how Cocaine exposure affects object-place recognition memory in non-human primates. Chapters in this serial are presented by leading researchers from North America, South America, Europe, Africa, Asia and Australia, who present addiction research from the bottom up, including how addiction evolved, basic research on animal models, and the psychiatric, psychological and cognitive characteristics of addictive behaviors in humans.