Season Nineteen of Modern Marvels premiered on July 16, 2012.
Episodes
| # |
#
|
Title
|
|
|
Airdate
|
|
|
|
| 684 |
1
|
Mega Speed Countdown
|
|
|
July 16, 2012
|
|
|
|
| 685 |
2
|
Mega Machine Countdown
|
|
|
July 23, 2012
|
|
|
|
| 686 |
3
|
Mega Weapon Countdown
|
|
|
July 30, 2012
|
|
|
|
| 687 |
4
|
Mega Food Countdown
|
|
|
August 27, 2012
|
|
|
|
| 688 |
5
|
Mega Snack Countdown
|
|
|
September 7, 2013
|
|
|
|
| 689 |
6
|
Super Strong Countdown
|
|
|
September 14, 2013
|
|
|
|
| 690 |
7
|
Amazing Job Countdown
|
|
|
September 21, 2013
|
|
|
|
| 691 |
8
|
Strangest Countdown
|
|
|
September 28, 2013
|
|
|
|
| 692 |
9
|
Hottest Rides Countdown
|
|
|
June 22, 2014
|
|
|
|
| 693 |
10
|
Amazing Gadgets Countdown
|
|
|
June 22, 2014
|
|
|
|
| 694 |
11
|
Panama Canal Supersized
|
|
|
April 11, 2015
|
|
|
|
