How have ancient mathematical principles applied from nature into some of the greatest artworks of all time?

Revs is paradoxically anonymous and raw and open in his honesty - a trailblazer in New York's graffiti scene.

Straker's neon signs are an eye-catching entry into street art's overcrowded canon.

Peter Howson's depictions of life and living are often seen as grotesque - but it's more than just how they look.

What do you have to do to be the first artist in the U.S. to be charged with obscenity?

David de la Mano's stark monochromatic murals lampoon our contemporary predisposition for groupthink.

Ireland's recent political history is still being recited by the country's iconic murals.

One artist uses subtle changes to the natural world as a means of understanding it better.