March 20, 2013 1:56 pm This Week on Open House: Experience Hilltop Living Catch Open House Sunday mornings on NBC. Check your local listings. 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