Dry Quicksand
chessie writes "Just in time for the holidays, new and improved quicksand! The new dry quicksand is a physical curiousity, made with air and sand instead of water with porewater pressure overcoming the density of sand . It is possible to vanish into a pile of completely dry sand as well. Worse, their sand looks the same as the normal, weight-supporting variety. Obviously, the US Army wants in on it."
Love the quote at the end...
"The U.S. Army is very interested in this," he said, "because these days, the U.S. Army tends to go to desert states."