December 13, 2019 1:44 am ‘Tonight': Trump Goes After Greta Thunberg In his monologue, Jimmy Fallon jokes about President Donald Trump going after 16-year-old climate activist Greta Thunberg, SantaCon and the latest impeachment hearings. US & World Videos 1:17 Student loan forgiveness: Deadline to consolidate loans is April 30 0:59 Runaway zebras corralled in Washington state; one still missing 1:40 Charlie Puth reacts to Taylor Swift's ‘The Tortured Poets Department' name-drop 2:52 Severe weather kills at least 5 as tornadoes rip through Midwest and South 0:48 World Central Kitchen to resume operations in Gaza