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) | ()
|
January 13, 2011
|
January 12, 2011
|
January 10, 2011
|
January 10, 2011
|
|
January 8, 2011
|
January 8, 2011
|
January 7, 2011
|
January 7, 2011
|
- &lsaquo previous
- …
- 551
- 552
- 553
- 554
- 555
- 556
- 557
- 558
- 559
- …
- next &rsaquo