In this undated image provided on Saturday Aug. 29, 2015  by Mount Sinai Hospital in New York shows Dr Vivek Reddy as he checks the screen  while doing a surgery to implant the new tiny  wireless pacemaker at the Mount Sinai hospital in New York . Unlike traditional pacemakers — which need a generator and wires and are implanted via surgery — the new pacemaker is a wireless tiny tube that can be attached to the right side of the heart using a catheter inserted through the leg. (Mount Sinai Hospital via AP) NO ARCHIVE NO SALES

LONDON | A tiny, wireless pacemaker could offer some heart patients a surgery-free alternative to the traditional devices, a new study says. Some doctors, however, say there are lingering safety questions and warned patients not to rush to get the new technology. Unlike traditional pacemakers — which need a generator and wires and are implanted via […]

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The Marijuana Enforcement Division originally proposed a red octagon marking with the letters THC inside. The updated proposal makes the octagon a triangle, still with the letters THC inside to indicate the drug’s psychoactive ingredient. The stamp on the actual product does not have to be red.

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FILE - In this Feb. 1, 2011, file photo, medical marijuana clone plants are shown at a medical marijuana dispensary in Oakland, Calif. College students are most likely to try marijuana, inhalants and alcohol for the first time during the summer, not the school year, according to the report released Thursday, Aug. 27, 2015, by the Substance Abuse and Mental Health Services Administration, which examined data from the annual National Survey on Drug Use and Health. (AP Photo/Jeff Chiu, File)

“For most of the substances, what you’re seeing is a summer peak. Young people may have more time on their hands and less supervision,” Saloner said. “For stimulants, first use seems to peak around finals. There’s a lot of anxiety and stress around final exams and a push for students to do as well as they can.”

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