This story was originally published by Wired and is reproduced here as part of the Climate Desk collaboration. On his first day in office, President Trump has signed a slew of executive orders that will set the United States on a radically different environmental path from the Biden administration. The executive orders and memoranda take the first steps to fulfilling many of Trump’s promises from the campaign trail: withdrawing the US from the Paris Agreement, drilling more oil and natural gas, and repealing multiple Biden-era environmental directives and departments. While Trump’s day-one executive orders are far-reaching, it’s not yet clear how they will be implemented or how quickly they will be felt.