Hard rock developed into a major form of popular music in the 1970s, with bands such as Led Zeppelin, The Who, Deep Purple, Aerosmith, AC/DC and Van Halen. During the 1980s, some hard rock bands moved away from their hard rock roots and more towards pop rock, while others began to return to a hard rock sound. Established bands made a comeback in the mid-1980s and it reached a commercial peak in the 1980s, with glam metal bands like Bon Jovi and Def Leppard and the rawer sounds of Guns N' Roses, which followed up with great success in the later part of that decade. Hard rock began losing popularity with the commercial success of grunge and later Britpop in the 1990s.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What band made a come back in the mid-1990s?
Ah, so.. unanswerable

During the summer months, it is common for temperatures to reach over 90 F (32 C), with an average of 106.5 days per year, including a majority from June to September, with a high of 90 F or above and 4.6 days at or over 100 F (38 C). However, humidity usually yields a higher heat index. Summer mornings average over 90 percent relative humidity. Winds are often light in the summer and offer little relief, except in the far southeastern outskirts near the Gulf coast and Galveston. To cope with the strong humidity and heat, people use air conditioning in nearly every vehicle and building. In 1980, Houston was described as the "most air-conditioned place on earth". Officially, the hottest temperature ever recorded in Houston is 109 F (43 C), which was reached both on September 4, 2000 and August 28, 2011.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How many days per year are Houston temperatures over 10 degrees?
Ah, so.. unanswerable

According to Vitruvius, the architect should strive to fulfill each of these three attributes as well as possible. Leon Battista Alberti, who elaborates on the ideas of Vitruvius in his treatise, De Re Aedificatoria, saw beauty primarily as a matter of proportion, although ornament also played a part. For Alberti, the rules of proportion were those that governed the idealised human figure, the Golden mean. The most important aspect of beauty was therefore an inherent part of an object, rather than something applied superficially; and was based on universal, recognisable truths. The notion of style in the arts was not developed until the 16th century, with the writing of Vasari: by the 18th century, his Lives of the Most Excellent Painters, Sculptors, and Architects had been translated into Italian, French, Spanish and English.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who wrote Re Re Aedificatoria?
Ah, so..
unanswerable