The US aims to grow oil production in Venezuela, which has the world's largest oil reserves. A new analysis shows this could use more than a tenth of the world's carbon budget meant to keep global warming below 1.5C by 2050. Venezuela’s proven oil reserves are huge and tapping them fully would use all the carbon emissions allowed to avoid the worst climate disasters. Though Venezuela’s oil industry is damaged after sanctions, US President Donald Trump called on oil companies to invest $100 billion to revive it. "We’re going to be extracting numbers in terms of oil like few people have seen," he said. ClimatePartner’s analysis predicts Venezuela’s oil output could rise by 0.5 million barrels a day by 2028 and reach 1.58 million barrels a day between 2035 and 2050. This increase alone would use 13% of the remaining carbon budget to meet the 1.5C goal. Venezuela’s oil is called the "filthiest" – heavy and with high sulphur – requiring energy-heavy extraction. S&P Global Platts Analytics found Venezuela’s Orinoco Belt oil has the highest carbon intensity worldwide, nearly 1,000 times that of Norway’s Johan Sverdrup field. Hollie Parry from ClimatePartner said, "The decision to ramp up production of one of the world’s most carbon intensive crude oils to historic levels would consume an estimated 13% of the remaining global carbon budget... In a rapidly warming world, such a move would lock in decades of high emissions..." Environmentalists criticize the US move as "reckless and dangerous." Greenpeace’s Mads Christensen called for a just shift away from fossil fuels that protects health and ecosystems, saying "short-term profit" should not come at such a cost.