Problem: Commercial solar water heaters began appearing in the United States in the 1890s. These systems saw increasing use until the 1920s but were gradually replaced by cheaper and more reliable heating fuels. As with photovoltaics, solar water heating attracted renewed attention as a result of the oil crises in the 1970s but interest subsided in the 1980s due to falling petroleum prices. Development in the solar water heating sector progressed steadily throughout the 1990s and growth rates have averaged 20% per year since 1999. Although generally underestimated, solar water heating and cooling is by far the most widely deployed solar technology with an estimated capacity of 154 GW as of 2007.
The solar water heaters introduced in the US in the 1890s saw growth until what time period?
The answer is the following: the 1920s

Problem: Some consider koshari (a mixture of rice, lentils, and macaroni) to be the national dish. Fried onions can be also added to koshari. In addition, ful medames (mashed fava beans) is one of the most popular dishes. Fava bean is also used in making falafel (also known as "ta'meyya"), which may have originated in Egypt and spread to other parts of the Middle East. Garlic fried with coriander is added to mulukhiyya, a popular green soup made from finely chopped jute leaves, sometimes with chicken or rabbit.
What can be added to koshari?
The answer is the following: Fried onions

Problem: Yale's residential college system was established in 1933 by Edward S. Harkness, who admired the social intimacy of Oxford and Cambridge and donated significant funds to found similar colleges at Yale and Harvard. Though Yale's colleges resemble their English precursors organizationally and architecturally, they are dependent entities of Yale College and have limited autonomy. The colleges are led by a master and an academic dean, who reside in the college, and university faculty and affiliates comprise each college's fellowship. Colleges offer their own seminars, social events, and speaking engagements known as "Master's Teas," but do not contain programs of study or academic departments. Instead, all undergraduate courses are taught by the Faculty of Arts and Sciences and are open to members of any college.
Who runs Yale's residential colleges?
The answer is the following: The colleges are led by a master and an academic dean

Problem: Spielberg's films often deal with several recurring themes. Most of his films deal with ordinary characters searching for or coming in contact with extraordinary beings or finding themselves in extraordinary circumstances. In an AFI interview in August 2000 Spielberg commented on his interest in the possibility of extra terrestrial life and how it has influenced some of his films. Spielberg described himself as feeling like an alien during childhood, and his interest came from his father, a science fiction fan, and his opinion that aliens would not travel light years for conquest, but instead curiosity and sharing of knowledge.
Which of Spielberg's parents liked sci-fi?
The answer is the following:
his father