Cathryn Virginia / for NBC NewsGuns in AmericaSchool Shooting Tracker: Counting school shootings since 2013
Win McNamee / Pool via AFP - Getty Images fileData GraphicsHow words used in the State of the Union have changed
Steven Senne / APData GraphicsHave losses from the shutdown equaled the cost of Trump's border wall demand?
Jee-ook Choi / for NBC NewsJee-ook ChoiEnvironmentHigh tides and sea rise make floods a part of life on the East Coast
Ronaldo Schemidt / AFP/Getty Images fileData GraphicsCan't get your hands on avocados lately? Here's why
South_agency / Getty Images fileData GraphicsCook carefully: Thanksgiving is the worst day of the year for home fires
Sue Ogrocki / AP fileMidterms 20182018 Midterms: The 50 hotly contested House races in Republican districts
Getty Images/APMidterms 2018Anti-immigrant 'extremist' group makes campaign donations to six Republican candidates
