When it is cooked at a very high temperature, the glass pieces melt and take the shape of the clay form.
VOA: special.2009.09.16
The severe form of the disease, dengue haemorrhagic fever, involves a hightemperature, head and muscle aches, internal bleeding and, at worst, circulatory failure.
In 1931 American chemical engineer Samuel Kistler invented the lightest known solid--an aerogel--by drying a form of silicon dioxide (a raw material for glass) under intense pressure and hightemperature.