How to make bootstrap columns the same height in a row?

http://ift.tt/1M8gZKp Here is the bootply for my website, basically I want the cols col-lg-6 to be the same height so that the images I have inside them are even, at the moment, one image stretches below the other one.

Edit: Current version http://ift.tt/1P3LcZl

via Chebli Mohamed