Nanoo Nanoo

Two interesting items today on nanotechnology. NPR Morning Edition reported on microdots put onto paper by printers. It allows anyone to tell whether a document has been forged, since documents may appear identical to the eye but sufficiently sensitive scanners can distinguish them at a microscopic level (nanoscopic level?).

So don't go using the work copier to send your threatening letters to Karl Rove and Gary Trudeau. Use the neighbor's.

The other item, courtesy Free Republic and Nature magazine, is a little happier: Nanotechnology used to kill cancer cells while leaving healthy cells whole.