I've always thought of knots in wood as a massive pain in the ass. Anyone who's cut a 2x4 with a handsaw or chopped wood for a fire knows a gnarly knot can stop you faster than Scott Stevens.
Enter Guiseppe Penone, the Italian artist who carved into a giant tree trunk and left the knotted parts untouched to reveal a smaller sapling inside. Who knew?
Penone recently had an exhibition at the Art Gallery of Ontario called The Hidden Life Within.