Stoned on the job? Increase in work injuries linked to legal weed

There has been a 10 percent rise in workplace injuries in regions of the U.S. where it is legal to smoke a joint, findings that come as countries including Germany and Thailand debate loosening or tightening rules around marijuana use.

"Laws that allow recreational marijuana sales were associated with a 10 percent increase in workplace injuries among individuals ages 20 to 34," the researchers said, in findings published by the American Medical Association (AMA) and based on official workplace injury data.