Chemistry textbooks are in need of a rewrite with the addition of four new elements to the Periodic Table. The International Union of Pure and Applied Chemistry (IUPAC) has confirmed the existence of four new elements with the atomic numbers 113, 115, 117, and 118, which were discovered by laboratories in Japan, the United States, and Russia. This bumper group of new elements completes the 7th row of the Periodic Table and clears the way for the discoverers to start thinking up names for them.
One annoying fact of life is losing teeth. Since humans only get two sets of teeth, losing an adult dinner grinder means either going without or replacing it with a substitute made of something like ceramic or metal. A more natural solution is the subject of a project by a team of scientists in Japan that is working on growing multiple, fully-functional teeth and implanting them in mice.
Using a type of magnetic insulator material that normally doesn’t conduct
electricity, scientists working at Stanford University and the Department of
Energy’s SLAC National Accelerator Laboratory have shown that electric currents
can still be made to flow along the borders of the grains within the material. This latest research
not only validates a long-held belief that magnetic insulators could be used to
conduct electricity, but offers a more tantalizing possibility of creating
highly-efficient magnetic memory devices.
Scientists have developed a new hydrogel that stretches and contracts just like an artificial muscle. The team created an L-shaped object made out of the hydrogel and immersed it in a water bath. When the water’s temperature was varied, it slowly "walked" forward.