Harvard University researchers have made thin polymer sheets that can crawl, grip and wriggle. They patterned the surface of the polymer with a protein called fibronectin. Rat muscle cells then automatically attached themselves to the polymer via the protein and formed muscle tissue that moved when given a jolt of electricity (). The material could be used to test drugs or repair organs.
Forget passwords, try “passgrids”. says its system is simpler and safer. Instead of remembering a PIN or password, users memorise a sequence of cell positions on a grid. A prompter…
