<span style="color: #222222;">U.S. President Joe Biden's climate envoy John Kerry will travel to Italy, Britain and Germany from Thursday to 19 May for talks on enhancing global climate ambition ahead of a U.N. climate summit.</span><br />'' <span style="color: #222222;"> </span><br />'' <span style="color: #222222;">The White House said that Kerry will hold talks with government officials and business leaders during his trip, and will also meet with Vatican officials while in Italy. Scotland will host the U.N. climate summit in November this year.</span><br />'' <span style="color: #222222;"> </span><br />'' <span style="color: #222222;">Last month the United States and other countries raised their targets for slashing greenhouse gas emissions at a global summit hosted by Biden meant to resurrect U.S. leadership in the fight against global warming.</span><br />''  <br />