Cycloramic is an app made in 2012 that can take 360 panorama shots without using your hands. It sure is a fascinating app, but what makes it even more interesting is the following story.
Pretty simple and useful tutorial, where you will open a random photograph with smoke and convert it into something really not friendly for our environment.
"It's not everyday you wake up and learn something completely new about the early universe." This really is an incredible discovery, a whole new era in physics and cosmology.