May 23, 2015 3:45 am WATCH: “Tonight Show” Thank-You Notes: Hillary Clinton and NFL Jimmy pens thank-you notes to Cannes Film Festival, Activia yogurt and Hillary Clinton. US & World Videos 1:40 Democrats say Big Oil misled public for decades about climate change 4:14 What to expect: Previewing the 2024 Met Gala 3:37 Learning about the Art Resource Collaborative for Kids 3:25 Mother's Day gift ideas with William James Gifts 1:35 Understanding the Biden administration's plans to reclassify marijuana