Today, E.P.A. Today's E.P.A. represents a significant step in the delivery of President Biden's ambitious agenda to address climate change and create union jobs. Michael S. Regan is the head of Environmental Protection Agency. He was also an author of the new rules for the Transportation Department. These strict standards are based on sound science and technical expertise. They encourage the development of technology, innovation, and will help America move forward to a clean energy future.Scientists warn that restoring Obama-era climate control will not suffice in light of the devastating effects of warming planet, such as record droughts, heat waves, floods, and wildfires around the world.Obama began the work to move us in the right direction for dealing with climate change. Michael Gerrard is the director of the Sabin Center for Climate Change Law, Columbia Law School. Trump tore everything apart. Biden is now putting all the pieces back together. We are still far behind. We have much more work ahead. It is only the beginning of the wholesale conversion to electric power and transportation systems.Obama's 2012 tailpipe emissions regulations required passenger cars to average 51 MPG by 2025. Trump relaxed the standard to 44 MPG by 2026, after which he reduced it to 51 MPG in 2020.Officials from the Administration stated that the new Biden standard will be 52 miles per gallon in 2026. They called it the most stringent federal greenhouse gases standards in American history.According to the White House, the regulations would reduce carbon dioxide emissions by two billion tons annually. This is about one-third of total carbon dioxide pollution in the United States. They also prevent the burning of approximately 200 billion gallons gasoline.Biden's administration plans to impose additional emissions standards for vehicles manufactured after 2026. These rules are what Mr. Biden hopes will drive automakers to eliminate the internal combustion engine. The second set of rules could prove to be more technical and legally challenging so administration officials decided to quickly restore the Obama regulations to reduce some emissions, while federal staff members tackle the task of creating the next rule.