8:50 p.m. Reid Epstein, White House reporter for POLITICO
IRS official's refusal to testify fuels scandal's flames
8:20 p.m. Adam Levin, Identity Theft 911and Credit.com
Tornado victims face manmade threat of storm scams
7:50 p.m. Meghan Slining, assistant professor at the University of North Carolina at Chapel Hill
75 percent of food and beverages sold contain added sweetner
5:50 p.m. - Glenn Thrush, senior White House reporter for Politico
Is federal aid after major disasters being politicized?
4:50 p.m. - Ali Velshi, host of Al Jazeera America
Did Apple use overseas shenanigans to avoid paying taxes on billions of income dollars?
4:20 p.m. - Doug Hill, chief meteorologist at ABC7
The science behind the tornado in Oklahoma
3:50 p.m. - Dan Gallagher, technology editor for Marketwatch
Microsoft unveils the new Xbox One console
3:20 p.m. Steve Futterman, CBS News correspondent
A sea of destruction in Moore, Okla.
2:20 p.m. - Ed McDonough, from the Maryland Emergency Management Agency
What you need to know about preparing for a tornado in the D.C. region
- Read more about the tornado that hit La Plata, Md., in April 2002 courtesy ABC7's Weather Blog.
- Read about previous tornado events in the D.C. region via the National Weather
- Read about what to do if you're caught behind the wheel when a tornado hits.
Watch video below of the 2002 tornado:
1:50 p.m. Mark Shriver, senior vice president of Save the Children's Strategic Initiatives
Helping the children of Moore, Okla., with safe play areas
1:20 p.m. Mary Madden Senior Researcher, Pew Internet Project
More teens are moving to Twitter to avoid their parents
Read more: Poll: Teens migrating to Twitter
12:51 p.m. - Dave Ross, commentator
Rescuing the snapshots of strangers
Former District resident talks about Okla. destruction
WTOP's Dick Uliano reports
10:20 a.m. - Jason Samenow, weather editor, Washington Post
Tornado hits Oklahoma
9:20 a.m. - Joshua Wurman, director, Center for Severe Weather Research
What is a tornado and how does one form?
Will Beretta stay or go in Md.?
WTOP's Kate Ryan reports
Related Link: The Baltimore Sun
8:20 a.m.- John King, CNN's chief national correspondent
Homes in Oklahoma are in splinters after tornado
7:50 a.m. - Lee Frank, CBS reporter in Oklahoma
Winds of Oklahoma tornado more like a hurricane
7:35 a.m. - Bob Beckel and Cal Thomas, commentators
Tea Party protests
7:20 a.m. - Rep. Chris Van Hollen, D-Md.
Congress needs to improve disclosure laws related to groups under IRS scrutiny.
6:50 a.m. - John Solomon, executive editor, Washington Guardian
Chilling effect of government monitoring reporting
2 dozen arrested during D.C. protest
WTOP's Nick Iannelli reports.
Fixing carpal tunnel trouble
- The Washington Examiner: Laurel man gets 20 years for secretly videotaping teen
- The Washington Post: Washington is 9th most expensive city in U.S.
Follow @WTOP on Twitter.