The term mainly refers to a mix of lithium and aluminosilicates that yields an array of materials with interesting thermomechanical properties. The most commercially important of these have the distinction of being impervious to thermal shock. Thus, glass-ceramics have become extremely useful for countertop cooking. The negative thermal expansion coefficient (CTE) of the crystalline ceramic phase can be balanced with the positive CTE of the glassy phase. At a certain point (~70% crystalline) the glass-ceramic has a net CTE near zero. This type of glass-ceramic exhibits excellent mechanical properties and can sustain repeated and quick temperature changes up to 1000 C.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What ingredients give glass-ceramics its useful thermal expansion?
Ah, so.. unanswerable

On 13 February 2008, fire destroyed the fishing factory and the four generators that supplied power to the island. On 14 March 2008, new generators were installed and uninterrupted power was restored. This fire was devastating to the island because fishing is a mainstay of the economy. While a new factory was being planned and built, M/V Kelso came to the island and acted as a factory ship, with island fishermen based on board for stints normally of one week. The new facility was ready in July 2009, for the start of the 200910 fishing season.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): By when was the old facility ready?
Ah, so.. unanswerable

The King presides over a period of misrule in which conventional social rules may be broken and reckless behavior is encouraged. Festivities are held in the open air, beginning with a cercavila, a ritual procession throughout the town to call everyone to attend. Rues of masked revelers dance alongside. On Thursday Dijous Gras (Fat Thursday) is celebrated, also called 'omelette day' (el dia de la truita), coques (de llardons, butifarra d'ou, butifarra) and omelettes are eaten. The festivities end on Ash Wednesday with elaborate funeral rituals marking the death of King Carnival, who is typically burned on a pyre in what is called the burial of the sardine (enterrament de la sardina), or, in Vilanova, as l'enterro.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who is typically burned on a pyre?
Ah, so..
King Carnival