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A28    SCIENCE
                    Tuesday 17 March 2020
            UN: Last year was second-warmest and decade was hottest ever



            By EDITH M. LEDERER                                                                                                 this still represents only one-
            UNITED  NATIONS  (AP)  —                                                                                            quarter of global emissions.
            Last  year  was  the  second                                                                                        “The  largest  emitters  must
            warmest  on  record,  the                                                                                           commit or our efforts will be
            past decade was the hot-                                                                                            in vain,” Guterres said.
            test  in  human  history  and                                                                                       He  said  the  Group  of  20
            January  was  the  warmest                                                                                          major  economic  powers
            January  since  1850,  the                                                                                          account  for  80%  of  world
            head  of  the  U.N.  weather                                                                                        emissions.
            agency said Tuesday.                                                                                                In the coming months, the
            Petteri  Taalas,  secretary-                                                                                        U.N.  will  be  very  actively
            general  of  the  World  Me-                                                                                        engaging  Western  Europe
            teorological  Organization                                                                                          nations,  the  U.S.,  Canada,
            also  said  Europe  had  a                                                                                          China,  India,  Russia  and
            record-warm  winter,  and                                                                                           Japan “in order to have as
            “we  have  also  broken  re-                                                                                        many as possible, ideally all
            cords  in  (emitting)  carbon                                                                                       of them, committed to car-
            dioxide,  methane  and  ni-                                                                                         bon neutrality in 2050,” the
            trous  oxide,”  three  green-                                                                                       secretary-general said.
            house  gases  that  cause                                                                                           Guterres pointed to “good
            global warming.                                                                                                     news”  from  the  European
            Taalas said at a briefing on                                                                                        Union, which unveiled plans
            the agency’s annual State                                                                                           last week for its first-ever cli-
            of the Global Climate 2019                                                                                          mate law that would make
            report that carbon dioxide   This satellite image provided by NASA on Saturday, Jan. 4, 2020 shows wildfires in Victoria and   legally  binding  its  execu-
            has  contributed  two-thirds   New South Wales, Australia.                                                          tive  arm’s  goal  of  cutting
            of  global  warming,  “and                                                                                          greenhouse  gas  emissions
            its lifetime is of several hun-  negative  impacts  on  the  next climate conference in  are committed to net-zero  by mid-century.
            dreds  of  years  —  so  it’s  a  sea ecosystems.”        Glasgow in November.”        carbon  emissions  by  2050,  “Let’s hope that this exam-
            problem  that  doesn’t  go  Taalas  also  pointed  to  for-  So  far,  he  said,  70  coun-  joined  by  cities,  banks,  ple can be followed by all
            away if you let these con-   est  fires  causing  a  lot  of  tries have announced they  businesses  and  others,  but  the others,” he said.q
            centrations continue.”       emissions, in the Arctic and
            Sitting  beside  Taalas,  U.N.  Australia where “they were,
            Secretary-General    Anto-   again, record breaking.”     Europe, Russia postpone
            nio Guterres, said: “Green-  “Smoke     and   pollutants
            house  gas  concentrations  from damaging fires in Aus-
            are at the highest levels in  tralia circumnavigated the   joint rover mission to Mars
            3 million years — when the  globe,  causing  a  spike  in
            Earth’s  temperature  was  carbon  dioxide  emissions,”
            as  much  as  three  degrees  he said.                    By FRANK JORDANS             virus  outbreak,  “which  left  is  the  only  country  to  suc-
            hotter and sea levels some  Guterres  said  there  is  no
            15 meters higher.”           time  to  lose  “if  we  are  to   BERLIN (AP) — The Europe-  our  experts  practically  no  cessfully land a functioning
                                                                                                   possibility  to  proceed  with  probe on Mars. NASA’s Cu-
                                                                      an Space Agency and Rus-
            He  added:  “Ocean  heat  avert      climate   catastro-
            is  at  a  record  level,  with  phe.”                    sia’s Roscosmos said Thurs-  travels  to  partner  indus-  riosity  and  InSight  landers
                                                                                                                                are still in operation on the
                                                                      day  they  are  postponing  tries.”
            temperatures  rising  at  the  Many scientists say the use
            equivalent of five Hiroshima  of  fossil  fuels,  which  are   a  planned  joint  mission  to  The mission’s goal is to put  planet.
                                                                      Mars until 2022, in part due  a  rover  on  the  red  planet  Three  other  Mars  missions
            bombs a second.”             one of the main sources of
            Taalas  said  the  warming  greenhouse gases, need to     to  travel  restrictions  result-  to help determine whether  are  planned  for  this  sum-
                                                                      ing from the new coronavi-
                                                                                                   there  has  ever  been  life  mer.  The  United  States  is
            of  the  oceans  has  led  to  end  by  the  middle  of  the
            unusual  tropical  storms,  century if average temper-    rus outbreak                 on  Mars.  Scientists  hope  launching  a  lander,  China
                                                                      The  ExoMars  mission  was  the  rover,  packed  with  has  a  lander-orbiter  com-
            including  one  in  Mozam-   atures  on  Earth  are  to  rise
            bique  in  March  2019  that  no  more  than  1.5  degrees   due to launch this year but  high-tech  instruments  and  bo,  and  the  United  Arab
                                                                      concerns  about  possible  named  after  British  chem-
                                                                                                                                Emirates  is  sending  an  or-
            was  the  strongest  in  the  Celsius  (2.7  degrees  Fahr-
            Southern  Hemisphere  “at  enheit) by 2100, the target    technical  problems  had  ist Rosalind Franklin, will be  biter.
                                                                      already  prompted  both  able  to  dig  for  biological  Spacecraft  can  only  be
            least  for  the  past  hundred  set in the 2015 Paris climate
            years.”                      agreement.                   agencies to discuss the de-  signatures of life below the  launched  to  Mars  every
                                                                                                   martian  surface  and  also  two  years,  to  take  advan-
                                                                      lay.
            He said there is also an esti-  Guterres  said  the  world
            mate “that sea water is the  is  way  off  track  for  meet-  “We  want  to  make  our-  provide further insights into  tage  of  the  best  possible
                                                                                                                                lineup  between  Earth  and
                                                                                                   the  planet’s  history  of  wa-
                                                                      selves  100%  sure  of  a  suc-
            most acid in 25 million years  ing  the  target,  and  “we
            ... and that’s going to have  have  to  aim  high  at  the   cessful  mission,”  European  ter.                     its neighboring planet.
                                                                      Space  Agency  Director  The postponement is anoth-       NASA’s   science   mission
                                                                      General  Jan  Woerner  said  er setback for the ExoMars  chief,  Thomas  Zurbuchen,
                                                                      in a statement. ”We cannot  program  after  the  2016  said  ESA  and  Roscosmos
                                                                      allow ourselves any margin  launch of an orbiter and a  made  a  “tough  decision”
                                                                      of  error.  More  verification  test  lander.  The  Trace  Gas  in  delaying  the  ExoMars
                                                                      activities will ensure a safe  Orbiter was successfully de-  mission.
                                                                      trip  and  the  best  scientific  ployed, but the Schiaparelli  “Launching  &  safely  land-
                                                                      results on Mars.”            lander  malfunctioned  and  ing  a  spacecraft  on  Mars
                                                                      Dmitry  Rogozin,  the  head  crashed  on  the  surface  of  are  extremely  demanding
                                                                      of Roscosmos, said the de-   Mars,  highlighting  the  diffi-  and  require  many  tech-
                                                                      lay  was  primarily  due  to  culty of putting a probe on  nologies & systems to func-
                                                                      technical  problems,  com-   the planet.                  tion perfectly,” he wrote on
                                                                      pounded  by  the  corona-    So  far,  the  United  States  Twitter.q
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