Photo by Flickr user wolfpackWX.

LOVE STORIES: How much do you know about famous American couples? Test your smarts at the Love Stories edition of The National Portrait Gallery’s Pop Quiz. Robert and Arlene Kogod Courtyard (8th and F Streets NW) 6:30-7:30 p.m. Free

SCIENCE: Hear five stories of how science changes lives when The Story Collider launches in D.C. DC9 (1940 9th Street NW) 8 p.m. $10

HOTLINE BLING: Get your sweaters out and your cheesy dance moves ready to go—DJs Gun$ Garcia and Magglezzz are spinning at So Far Gone Drake Night. U Street Musical Hall (1115 U St NW) 10 p.m. $5-10

LAW: Commissioner Charles H. Ramsey, former MPD chief and co-chair of the President’s Task Force on 21st Century Policing, discusses his “perspectives on law enforcement, his career spanning almost fifty years, and the future of policing.” Burke Theatre at the U.S. Navy Memorial (701 Pennsylvania Avenue NW) 6 p.m. Free, but register here.