Miss­ing emis­sions tar­gets

The Week (US) - - News -

Coun­tries are nowhere near to re­duc­ing their car­bon diox­ide emis­sions to lev­els promised in the 2015 Paris cli­mate agree­ment, ac­cord­ing to a damn­ing United Na­tions study. The an­nual Emis­sions Gap Re­port found that emis­sions rose in 2017, after re­main­ing rel­a­tively flat in the three pre­vi­ous years. Based on cur­rent trends, the world will warm

5.8 de­grees Fahren­heit above prein­dus­trial tem­per­a­tures by 2100—far more than the 3.6-de­gree goal in the Paris pact. To hit that lower tar­get, the U.N. says, the world will have to re­duce emis­sions by 25 per­cent by 2030. To keep tem­per­a­ture rises to un­der

1.5 de­grees, which is in­creas­ingly what sci­en­tists think will be nec­es­sary to keep the planet hab­it­able in the long term, emis­sions will need to be 55 per­cent lower by 2030. The re­port con­firms fears raised by last month’s In­ter­gov­ern­men­tal Panel on Cli­mate Change study, which said coun­tries are fail­ing to act fast enough to avoid dire cli­mate con­se­quences, such as ex­treme droughts, floods, and sea level rises. “If the IPCC re­port rep­re­sented a global fire alarm,” the U.N.’s en­vi­ron­ment deputy ex­ec­u­tive di­rec­tor, Joyce Msuya, tells Reuters.com, “this re­port is the ar­son in­ves­ti­ga­tion.”

re­search has found. Sci­en­tists at the Nor­we­gian Univer­sity of Science and Tech­nol­ogy ex­am­ined the ac­tiv­ity lev­els of more than 4,400 kids and their par­ents over an 11-year pe­riod. They found that moth­ers whose ex­er­cise lev­els dropped as their chil­dren were grow­ing up were more likely to have over­weight teenagers. But when a mom’s weight went down, so did their chil­dren’s body mass in­dex. No such cor­re­la­tion was found when fa­thers shed pounds. That could be be­cause moth­ers still tend to be re­spon­si­ble for plan­ning ac­tiv­i­ties in the home and what’s eaten day to day, al­though the re­searchers note that they didn’t study these is­sues. “Par­ents have a ma­jor im­pact on their chil­dren’s health and life­style,” co-au­thor Marit Naess tells The Daily Tele­graph (U.K.). “Be­hav­iors that lead to obe­sity are eas­ily trans­ferred from par­ent to child.”

span and weighs 5.4 pounds, flew nearly 200 feet in one gym­na­sium test flight, re­ports The Wash­ing­ton Post. It has a thrust-to-power ra­tio sim­i­lar to a jet en­gine, yet is es­sen­tially silent. Lead en­gi­neer Steven Bar­rett ad­mits his fly­ing ma­chine is “still some way away from an air­craft that could per­form a use­ful mis­sion,” and he doesn’t yet know whether the tech­nol­ogy can be safely scaled up. Even so, he and his team think ionic wind tech­nol­ogy could at the very least lead to qui­eter drones.

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