Joshua Allen Harris

In a world of over six billion people, new firsts are almost impossible, but Joshua Allen Harris has managed to eek out one more, being the first person to harness the artistic opportunities offered by subway exhaust. Using only tape and discarded plastic shopping bags, the New York based artist creates giant inflatable animals that he fastens to sidewalk grates and vents. Exhaust air expelled by passing subway trains then fills the bags, causing the creatures to become animated.

A polar bear that some have linked to concerns about global warming is the most famous Joshua Allen Harris creation so far, but he’s made many other animals, creatures and monsters, many of which can be viewed online. Other artists doing innovative things in the outdoors include Blu, Maximillian Wiedemann and Julian Beever.