Congratulations to Professor Ertl on his Nobel Prize.
Ertl’s work is important because chemical reactions play by different rules when one or more of the molecules is tied to a surface and can’t flop around in solution. All kinds of everyday processes occur only at surfaces – the rusting of iron or the adhering of paint to a wall. it’s really difficult to took at a process that occurs on a layer of matter that is only a few atoms wide. Ertl is a master of adapting whatever techniques get him the answer he needs, and that has made him an analytical jack-of-all trades.