Which is better: an underwing-engine plane or a rear-engine one? Rear-engine planes have their benefits. They’re easier to manoeuvre in case of engine failure, they’re less likely to suck in foreign objects, and they allow for built-in airstairs. Although they were phased out because they’re less economical than underwing-engine planes, they may be key to incredibly fast flights; all supersonic (faster-than-sound) planes being designed today feature rear-mounted engines.
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With drug overdose deaths on the rise, authorities are attempting to curb the epidemic by tracking and sharing information in real time. In one unique effort, a nonprofit in New York City is using drug-testing equipment and stamping or marking habits of dealers to identify drug batches that may endanger users. Other approaches are also being used, such as monitoring drug-related chatter on Reddit and analyzing local wastewater for opioid and other drug levels. With the combination of these efforts, researchers hope to put a dent in the opioid crisis and reduce overdose deaths. Read full article here