And EPA plans to overhaul the Biden administration’s “social cost of carbon,” a metric used to assess the cost of climate change. On his first day in office, Trump ordered EPA to weigh eliminating the “social cost of carbon” from regulatory decisions and to consider the legality of the “endangerment finding.”

Most of the actions are reconsiderations of existing policies, including regulations on power plants, the oil and gas industry, vehicles and wastewater. Standards for mercury, pollutants, greenhouse gas emissions and air quality are also being reviewed.

The head of the Environmental Protection Agency has announced a series of actions to roll back landmark environmental regulations, including rules on pollution from coal-fired power plants, climate ch