Ceramic knives provide certain advantages over metal blades. They are harder than steel and hold their edge longer. On the rare occasion when a ceramic knife needs sharpening, a grinding wheel coated in diamond dust must be used. Their nonconductive, nonmagnetic properties make them useful in bomb disposal, and their resistance to corrosion is ideal for scuba divers. However, ceramic knives are also more brittle and shatter more easily than metal ones. Why is metal often used in their handles?
Back in the day
After earning millions as a stockbroker and investment consultant, Fossett began a second career as a sports adventurer. He swam the English Channel in 1985 and set many sailing records, but he is best known for his long-distance solo aviation triumphs, like becoming the first person to fly solo nonstop around the world in a balloon in 2002. He disappeared while flying a private plane in Nevada in September 2007 and was declared dead five months later. When was his crash site finally discovered?
Born on a day like today
An American journalist, Higgins covered major world events, including the liberation of the Dachau concentration camp and the Nuremberg Trials, and was the first woman to win a Pulitzer Prize. While reporting on the Korean War, she was expelled from Korea by US General Walton Walker—who said the military had no time to prepare accommodations for women—but when she appealed to General Douglas MacArthur, the ban was lifted. Higgins's life was cut short by a disease contracted while covering what?