This type of flash mob with pencils is called "urban sketching." It's a global movement turning sidewalks into studios, parks into popup galleries and everyday people into illustrators.

Grab that and any scrap of paper, napkin, or notebook, and you’re good to go. That’s the beauty of sketching. But what to ...

In a world filled with fleeting moments and digital snapshots, Paul Heaston has carved out his own space as a unique urban ...