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) | ()
|
December 13, 2011
|
December 12, 2011
|
December 11, 2011
|
December 10, 2011
|
|
December 9, 2011
|
December 9, 2011
|
December 9, 2011
|
December 8, 2011
|
- &lsaquo previous
- …
- 447
- 448
- 449
- 450
- 451
- 452
- 453
- 454
- 455
- …
- next &rsaquo