intellitech sends this quote from a NASA news release:Reader Bob the Super Hamste adds, "The article along with the BBC's coverage discuss briefly three methods of how this can be done with lasers. The first method called 'optical tweezers,' in which a molecule is trapped where two beams cross (PDF). However, it requires an atmosphere to work. The second method using solenoid beams has already worked in the laboratory (PDF). The third method using Bessel beams has yet to be experimentally proven."