The severe weather in the Alps has been studied since the 18th century; particularly the weather patterns such as the seasonal foehn wind. Numerous weather stations were placed in the mountains early in the early 20th century, providing continuous data for climatologists. Some of the valleys are quite arid such as the Aosta valley in Italy, the Maurienne in France, the Valais in Switzerland, and northern Tyrol.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Since when has the severe weather in the Alps been studied? 
Ah, so.. the 18th century

The exodus of Salvadorans was a result of both economic and political problems. The largest immigration wave occurred as a result of the Salvadoran Civil War in the 1980s, in which 20–30% of El Salvador's population emigrated. About 50%, or up to 500,000 of those who escaped headed to the United States, which was already home to over 10,000 Salvadorans, making Salvadorans Americans the fourth-largest Hispanic and Latino American group, after the Mexican-American majority, stateside Puerto Ricans, and Cubans.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How many Salvadorans immigrated?
Ah, so.. 20–30% of El Salvador's population emigrated. About 50%, or up to 500,000 of those who escaped headed to the United States,

Founded as the School of Commerce and Finance in 1917, the Olin Business School was named after entrepreneur John M. Olin in 1988. The school's academic programs include BSBA, MBA, Professional MBA (PMBA), Executive MBA (EMBA), MS in Finance, MS in Supply Chain Management, MS in Customer Analytics, Master of Accounting, Global Master of Finance Dual Degree program, and Doctorate programs, as well as non-degree executive education. In 2002, an Executive MBA program was established in Shanghai, in cooperation with Fudan University.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): After whom is Olin Business School named?
Ah, so..
John M. Olin