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) | ()
|
September 30, 2009
|
September 29, 2009
|
September 28, 2009
|
September 26, 2009
|
|
September 26, 2009
|
September 25, 2009
|
September 25, 2009
|
September 24, 2009
|
- &lsaquo previous
- …
- 690
- 691
- 692
- 693
- 694
- 695
- 696
- 697
- 698
- …
- next &rsaquo