Contrary to some claims, people in the U.S may not be substituting cannabis for opioids, according to new research at Columbia University Mailman School of Public Health. The study examined the direction and strength of association between cannabis and opioid use over 90 consecutive days among adults who used non-medical opioids. The findings showed that opioid use was at least as prevalent on days when cannabis was used as on days when it was not, and that this was irrespective whether participants were experiencing pain or not. The study, published in the scientific journal Addiction, is among the first to test opioid substitution directly.
The study, which compared the probability of non-medical opioid use on days when cannabis was used with days when cannabis was not used, included 13,271 days of observation among 211 participants from the greater New York area. The participants were predominantly male, urban, unemployed, unmarried,
SEOUL, South Korea — North Korea displayed what appeared to be its largest-ever intercontinental ballistic missile during a nighttime military parade in Pyongyang on Saturday, but it was not immediately clear if the missile would work or was for show.
The North’s leader, Kim Jong-un, has vowed to strengthen the country’s nuclear deterrent as talks with President Trump over the country’s arsenal have stalled. The rollout of the weapon comes as Mr. Kim has struggled to keep his promises to strengthen his nation’s staggering economy.
The new ICBM appeared to be much larger than North Korea’s biggest, previously disclosed long-range missile, the Hwasong-15. The size of the new missile indicated that it might fly farther and carry a more powerful nuclear warhead, South Korean and other analysts said, although it has never been flight-tested.
North Korea has been improving its missile and nuclear technologies despite Mr. Trump’s on-again, off-again diplomacy
Scientists are learning important new things about the first-ever directly imaged black hole, including behaviors consistent with Einsteinian theory, but it’s also showing an unexpected feature in the form of a very wobbly ring.
Seems like forever ago, but we finally got to feast our eyes on the apparently unseeable back in April 2019, when this incredible image of a supermassive black hole was first released. Of course, we can’t actually “see” the black hole, because, as any 6-year-old will happily tell you, black holes have a habit of sucking up light. What the picture does show, however, is an asymmetric ring, known as the black hole’s shadow, of superheated gas swirling around the black hole’s event horizon—that boundary beyond which light cannot escape.
This particular black hole, with the mass of 6.5 billion Suns, is located 55 million light-years away