These conceptual illustrations have been made by Davide Bonazzi, who is an Illustrator from Bologna, Italy. According to the artist, he mixes digital techniques with textures of scanned found objects, in order to give them conceptual illustrations with a warm and evocative atmosphere.
I was pretty much looking at the illustrations and trying to figure out what the conceptuality is behind them. Some of them are quite powerful. See more of his work on:

A New Way to Clean Old Money
Abdication
Alzheimer disease
Arab Springs
Chemistry of Seduction
Climate Change
Datagate
Digital Natives
Disposal
Doctors Without Borders
Dyslexia
Gap Year
Ghost Files
Locking Up Kids for Life
Made In China
Meniere’s disease
Pilot Season Gets Crazy
Save the Arctic
Saving Money with Apps
Toxic Assets
Underwater Theater
Women and Politics