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 2, 2015
|
November 2, 2015
|
November 2, 2015
|
October 31, 2015
|
|
October 30, 2015
|
October 30, 2015
|
October 30, 2015
|
October 29, 2015
|
- &lsaquo previous
- …
- 93
- 94
- 95
- 96
- 97
- 98
- 99
- 100
- 101
- …
- next &rsaquo