In the music world, songs get passed around like a hot potato. Demo songs are sent to one artist, turned down, and recorded by another. Tracks bend gender rules, with Aerosmith snatching a power ballad from Celine Dion and Chris Brown handing over one of his tunes to Rihanna. Here are just 11 of the many songs that made it big after being turned down by other singers.

Most often the color palette that we associate with history is limited to black and white only. But have you ever imagined what did people, their outfits and backgrounds looked like in real life – in color? Members of this one group on reddit, called r/ColorizedHistory, sure have: they pick historic photos that we have only seen in black and white, and bring them back to life by digitally coloring them. Of course, some interpretation and imagination is used in the process, but all of the artists try to work with as much historical accuracy as possible. Even though the idea looks simple, the final image has a surprisingly touching effect: by seeing those historic moments in color, we can relate to them easier, and this makes the pictures a whole lot more powerful. Instead of seeing those photos like we’re used to in history books, we now meet people that seem a lot more real, and situations – war scenes, for example – that look as if they have just happened. It’s nice to see that the community of history fans is growing, and that people want to make it relevant to others. However, this has also sparked some discussion, as some say that the artists are just messing with historic facts and misinforming people. So, view it critically. For more old photographs restored in color, check out the works of Sanna Dullaway and redditor mygrapefruit from Sweden.

Bad breath is a crime people, and the sooner we eliminate it the better. Here's some creative ads to encourage us to step up the mouth hygiene.

Have you ever thought of the stories, struggles and crazingess that lie behind all the gorgeous and unbelievable images we so casually look at? Well here's a little reminder of what it takes to be a photographer.