The Knight Lab's JuxtapostJS tool, created by Medill student Alex Duner, allows content producers to use to photos and use a slider in order to compare them better.
For journalistic purposes, this could be used for:
* Before-and-after scenes of historic nature;
* Before and after a disaster—earthquake, floods;
* Before-and-after crowd shots; * To compare Photoshop trickery;
What else?
