 Activists and scientists have raised their concerns about what a national rally victory might mean for the country's climate and environment policy. France's plans to expand renewable energy and move away from fossil fuels is under threat from Marine Le Pen's far-right nationalists, which have vowed to scrap some key environment policies. We're going to talk more about that now with our environment editor, Valerie DeCamp. Valerie, first of all, what do we know about their environment policies if they were to win a majority of seats?