Agence France-Presse: Former US vice president Al Gore, a leading environmental advocate, said a bill that would curb greenhouse gases was “one of the most important pieces of legislation” ever in Congress. “Passage of this legislation will restore America’s leadership of the world and begin, at long last, to solve the climate crisis,” Gore, who won a Nobel Prize for his work to combat global warming, told the House Energy and Commerce Committee. “It is truly a moral imperative.” Congress is …