Join Shepard Smith every Monday through Friday at 3 p.m. ET for FOX News Channel's newest daytime show, Studio B.

We'll bring you the biggest stories of the day, including interviews with today's top newsmakers. Become part of the mix and get your voice heard... drop us an email at studiob@foxnews.com.

Feb. 3:

What went wrong with Columbia? NASA says it's starting the long process of piecing this massive puzzle together
• Glynn Lunney, former NASA flight director

Secretary of State Colin Powell says he'll present the U.N. Security Council with hard evidence on Iraqi weapons. After its release, will more allies come on board?
• Robert Hunter, former U.S. ambassador to NATO

These stories ... and more on Studio B With Shepard Smith at 3 p.m. ET.

Note: Topics subject to change