Back in the nineties you couldn't talk about fossil fuel alternatives without bringing up fusion. Then there was a the mistaken claim regarding cold fusion and the whole field got the cold shoulder. With growing energy prices there is a renewed interest in the practically unlimited energy of fusion.
A fusion reactor is filled with a charged plasma contained inside a doughnut-shaped chamber called a tokamak. One problem that has stood in the way of fusion has be a tendency for the plasma to erode the inner walls of the tokamak. Now researchers have found a way to reduce the erosion by using magnetic fields. A small resonant magnetic field creates a "chaotic" magnetic interference on the plasma edge which stoms the fluxes that cause the erosion from forming.
http://www.physorg.com/news67442282.html