Jimmy Fallon December 11, 2018 2:40 am ‘Tonight': Fallon, The Roots and ‘The Voice' Mashup Jimmy Fallon and The Roots join “The Voice” coaches Kelly Clarkson, Jennifer Hudson, Adam Levine and Blake Shelton, plus host Carson Daly, for an a cappella mashup of their hit songs. 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