Marshmallow Launch at the White House Science Fair
February 07, 2012 | 3:01
The President meets an 8th grader named Joey from Phoenix, AZ at the White House Science Fair and the two launch a marshmallow across the state dining room with Joey's science project - an air cannon.
Download mp4 (72MB) | ()
|
November 17, 2010
|
November 17, 2010
|
November 16, 2010
|
November 16, 2010
|
|
November 15, 2010
|
November 13, 2010
|
November 13, 2010
|
November 13, 2010
|
- &lsaquo previous
- …
- 563
- 564
- 565
- 566
- 567
- 568
- 569
- 570
- 571
- …
- next &rsaquo