U.S. President Barack Obama (R) pumps the Extreme Marshmallow Cannon invented by Joey Hudy, 14, from Phoenix, Arizona, while touring student science fair projects on exhibit in the State Dining Room at the 2012 White House Science Fair in Washington, DC. - 

From the Marketplace Datebook, here's a look at what's coming up Wednesday, June 18:

In Washington, a Senate Committee discusses "Aggressive E-Cigarette Marketing and Potential Consequences for Youth."

The Federal Reserve wraps up a two-day meeting on interest rates.

FedEx releases quarterly earnings.

A House subcommittee on Aviation holds a hearing on "Airport Financing and Development."

And it's a celebration of tinkerers and their cutting edge tools. Makers, innovators, and entrepreneurs of all ages are at the White House for its first-ever Maker Faire.