United Nations Secretary-General Antonio Guterres has said that humanity must choose between hope and surrender while confronting a climate crisis threatening civilization itself.<br />''<br />''Addressing the opening plenary of a UN Climate Conference in Madrid yesterday, Mr Guterres said, one is the path of surrender, where they have sleepwalked past the point of no return, jeopardizing the health and safety of everyone on this planet.<br />''<br />''United States Congressional leader Nancy Pelosi said that the world could still count on the United States in the fight against global warming despite President Donald Trump's decision to pull out of the Paris Agreement.<br />''<br />''Ms Pelosi and 14 other members of the US Congress were in Madrid to make the point that larges swathes of the United States are committed to the targets set by the 2015 agreement, as are most Democratic candidates for President.<br />''<br />''Speaking at the UN Conference, she said, they are at the meet to say, on behalf of the House of Representatives and the Congress of the United States that they are still in it. She said, they see global warming as an existential threat.<br />''<br />''President Trump had dismissed global warming as a hoax. Last month, he gave formal notice of the US withdrawal from the 196-nation Paris climate treaty.<br />''<br />''The Madrid summit aims to put the finishing touches to the rules governing the 2015 Paris accord. The meet was due to be held in Chile but was cancelled by the government due to weeks of civil disturbances. Spain then stepped in to host the event, which will see 29,000 attendees over the two weeks of talks. Overall some 50 world leaders will attend the conference.<br />