Japan's Otemae Confectionery College professor Hiroshi Matsui (R) and college students display a 3-meter diameter chocolate made globe, weighing 800kg, at the college's festival in Osaka, western Japan, November 10, 2007. Matsui and students dot some 35,000 colored chocolate truffles, in 3-cm diameter, on a 3-meter diameter core chocolate ball to shape a globe, which warns the global warming to be melting down over the temperature of 40-degree Celsius.