Robert Krulwich This Should Be a Hit in Texas: Oil Turns Into a Christmas Tree By Robert Krulwich • Dec 17, 2012 We start with a pool of oil. We turn on a magnet. The oil travels up a superstructure and blossoms into a tree. Turn off the magnet, the branches, the needles, the tree melt away. It's a puddle again. The perfect tree for an oil billionaire, no?