Former President Barack Obama took to Twitter today to address the climate crisis. This comes in response to the Trump administration\u2019s rollback of the nation\u2019s biggest effort to combat climate change.\u00a0 On Tuesday, the Trump administration released new fuel-efficiency standards for cars and trucks. In a win for the oil and gas industries, the rollback spares automakers from having to meet gas mileage and emissions requirements that were mandated in 2012. \u201cWe've seen all too terribly the consequences of those who denied warnings of a pandemic. We can't afford any more consequences of climate denial,\u201d President Obama tweeted. \u201cAll of us, especially young people, have to demand better of our government at every level and vote this fall,\u201d he added. There will likely be litigation by environmental groups challenging the loosened fuel-economy standards. \u201cGutting the clean car standards makes no sense. It will harm the air we breathe, stall progress in fighting the climate crisis and increase the cost of driving,\u201d Gina McCarthy, President of the Natural Resources Defense Council, said in a statement. \u201cWe\u2019ll be seeing the Trump administration in court,\u201d she added. New Fuel-Efficiency Standards The Environmental Protection Agency and the Department of Transportation prepared the new rule. It allows fuel economy and emission standards to increase by 1.5 percent annually. The current rule requires an increase of 5 percent per year. The reversal of Obama-era fuel standards will undo policies that require automakers to sell vehicles that release fewer smog-forming pollutants into the air. The new standards will likely result in a major increase in greenhouse gas emissions. This will, in turn, worsen the effects of climate change.\u00a0 \u201cWe are delivering on President Trump\u2019s promise to correct the current fuel economy and greenhouse gas emissions standards,\u201d EPA Administrator Andrew Wheeler said in a statement. Opponents criticized the new rule because the Trump administration released it amid the current coronavirus pandemic. Some argue the rollback could worsen the public's health during a time when countless people are already sick. The new standards are scheduled to take effect later this year.