Biden admin announces tougher fuel mileage standards

The Environmental Protection Agency said Monday it will tighten pollution standards for cars and light trucks in an attempt to reduce carbon dioxide emissions from automobiles.

Why it matters: Transportation overall is the largest source of U.S. greenhouse gas emissions, so tougher standards for passenger vehicles are a major part of efforts to curb CO2 output.

By the numbers: The new rules will require passenger vehicles to travel an average of 55 miles per gallon of gasoline by 2026.

The EPA said this new standard will prevent around 3 billion tons of greenhouse gas...