Tim Walz, America's new environmental champion?

As governor of Minnesota, Tim Walz has championed some of the most progressive climate policies, raising hopes that, if elected to office, Kamala Harris's vice presidential pick could help put environmental issues high up the agenda in the White House. France 24's Valerie Dekimpe takes a look at Walz's record on climate change and whether the candidates' respective green policies will play a role in deciding the upcoming election.