(Reuters) - The world is failing to cut carbon emissions fast enough to avoid disastrous climate change, a dawning truth that is giving life to a technology that for years has been marginal – pulling carbon dioxide from the air. Leading the charge, the U.S. government has offered $3.5 billion in grants to build the factories that will capture and permanently store the gas - the largest such effort globally to help halt climate change through Direct Air Capture (DAC) and expanded a tax credit to $180/tonne to bolster the burgeoning technology. The sums involved dwarf funding available in other...