Smoking marijuana may be more harmful to lungs than smoking cigarettes, study finds - ABC News
Cannabis and the Environment: What Science Tells Us and What We Still Need to Know
Research: Does Cannabis Really Make You More Creative?
Hardcore pot smoking could damage the brain's pleasure center, Science
Smoking cannabis may be more harmful to lungs than tobacco: study
Adolescents more vulnerable to cannabis addiction but not other mental health risks
How cannabis causes paranoia
Cannabis use linked with suicidality, study finds
It may be increasingly legal but doesn't mean cannabis is safe – Harvard Gazette