cylonlover writes: Scientists at Harvard University have created a hydrogel that’s tough, biocompatible, self-healing, and can be repeatedly stretched to 21 times its regular length without breaking – all of which are qualities that could make it an ideal replacement for damaged cartilage in humans. Being a hydrogel, it’s composed mostly of water, although it also contains calcium ions, and a mix of two common polymers. While each of those polymers are fairly weak on their own, the results are truly impressive when they’re combined.
"The number of Unix installations has grown to 10, with more expected."
-- The Unix Programmer's Manual, 2nd Edition, June, 1972