Teacher's stunning whiteboard art
A US teacher created these astonishing artworks on a classroom whiteboard - during his 25-minute lunch break.
Gregory Euclide started the project to show his pupils, in the Minnesota River Valley, what could be achieved in a short period of time.
He used Japanese Sumi ink, whiteboard erasers, paper towels, spray bottles, brushes and other objects he found lying around the classroom.
He said: "In our culture, there is a strong emphasis on reproduction and the original seems less important.
"My students were shocked when I would erase the original, because they saw it firsthand, and they were disturbed that it was destroyed.
"People who do not see the original have no problem only looking at it on a screen or as a print, but once you see the original it is hard to let it go or believe that it could be destroyed."
Mr Euclide said his unusual habit of drawing on whiteboards started as a way to release stress.
Now he has created a special edition of ten portfolios, called Laid Down & Wiped Away, for a permanent version of his whiteboard art.
His artwork is also featured on the cover of Bon Iver's 2012 Grammy Award winning album.