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) | ()
|
February 7, 2011
|
February 7, 2011
|
February 7, 2011
|
February 5, 2011
|
|
February 4, 2011
|
February 4, 2011
|
February 4, 2011
|
February 4, 2011
|
- &lsaquo previous
- …
- 544
- 545
- 546
- 547
- 548
- 549
- 550
- 551
- 552
- …
- next &rsaquo