Article: Liber Aboali Abincine de Anima in arte Alchemiae was the most influential, having influenced later medieval chemists and alchemists such as Vincent of Beauvais. However Anawati argues (following Ruska) that the de Anima is a fake by a Spanish author. Similarly the Declaratio is believed not to be actually by Avicenna. The third work (The Book of Minerals) is agreed to be Avicenna's writing, adapted from the Kitab al-Shifa (Book of the Remedy). Ibn Sina classified minerals into stones, fusible substances, sulfurs, and salts, building on the ideas of Aristotle and Jabir. The epistola de Re recta is somewhat less sceptical of alchemy; Anawati argues that it is by Avicenna, but written earlier in his career when he had not yet firmly decided that transmutation was impossible.

Question: What is another work of Avicenna that is said to not be his creation?
Ans: the Declaratio

Article: All Muslims believe that Muhammad had said: "To whomsoever I am Mawla, Ali is his Mawla." This hadith has been narrated in different ways by many different sources in no less than 45 hadith books[citation needed] of both Sunni and Shia collections. This hadith has also been narrated by the collector of hadiths, al-Tirmidhi, 3713;[citation needed] as well as Ibn Maajah, 121;[citation needed] etc. The major point of conflict between the Sunni and the Shia is in the interpretation of the word 'Mawla'. For the Shia the word means 'Lord and Master' and has the same elevated significance as when the term had been used to address Muhammad himself during his lifetime. Thus, when Muhammad actually (by speech) and physically (by way of having his closest companions including Abu Bakr, Umar and Uthman [the three future Caliphs who had preceded Ali as Caliph] publicly accept Ali as their Lord and Master by taking Ali's hand in both of theirs as token of their allegiance to Ali) transferred this title and manner of addressing Ali as the Mawla for all Muslims at Ghadiri Khum Oasis just a few months before his death, the people that came to look upon Ali as Muhammad's immediate successor even before Muhamamd's death came to be known as the Shia. However, for the Sunnis the word simply means the 'beloved' or the 'revered' and has no other significance at all.

Question: What is the point of conflict between Sunni and Shia?
Ans: the word 'Mawla'

Article: According to Thomas DeGregori, an economics professor at the University of Houston, in an article published by the Cato Institute, a libertarian think-tank operating in Washington D.C., "it is clear that technological and economic change are vital ingredients in getting children out of the workplace and into schools. Then they can grow to become productive adults and live longer, healthier lives. However, in poor countries like Bangladesh, working children are essential for survival in many families, as they were in our own heritage until the late 19th century. So, while the struggle to end child labour is necessary, getting there often requires taking different routesand, sadly, there are many political obstacles.

Question: What are the obstacles he claims are to ending child labor?
Ans: political obstacles

Article: In 1897, Frank Shuman, a U.S. inventor, engineer and solar energy pioneer built a small demonstration solar engine that worked by reflecting solar energy onto square boxes filled with ether, which has a lower boiling point than water, and were fitted internally with black pipes which in turn powered a steam engine. In 1908 Shuman formed the Sun Power Company with the intent of building larger solar power plants. He, along with his technical advisor A.S.E. Ackermann and British physicist Sir Charles Vernon Boys, developed an improved system using mirrors to reflect solar energy upon collector boxes, increasing heating capacity to the extent that water could now be used instead of ether. Shuman then constructed a full-scale steam engine powered by low-pressure water, enabling him to patent the entire solar engine system by 1912.

Question: In what year did Frank Shuman patent his solar engine?
Ans:
1912