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) | ()
|
July 12, 2010
|
July 12, 2010
|
July 10, 2010
|
July 9, 2010
|
|
July 9, 2010
|
July 8, 2010
|
July 7, 2010
|
July 7, 2010
|
- &lsaquo previous
- …
- 596
- 597
- 598
- 599
- 600
- 601
- 602
- 603
- 604
- …
- next &rsaquo