The problem: Answer a question about this article:
Given that water contamination is a major means of transmitting diarrheal disease, efforts to provide clean water supply and improved sanitation have the potential to dramatically cut the rate of disease incidence. In fact, it has been proposed that we might expect an 88% reduction in child mortality resulting from diarrheal disease as a result of improved water sanitation and hygiene. Similarly, a meta-analysis of numerous studies on improving water supply and sanitation shows a 22–27% reduction in disease incidence, and a 21–30% reduction in mortality rate associated with diarrheal disease.
What has cut the rate of diarrhea disease incidents? 
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The answer: clean water supply and improved sanitation


The problem: Answer a question about this article:
On 25 January 1952, a confrontation between British forces and police at Ismailia resulted in the deaths of 40 Egyptian policemen, provoking riots in Cairo the next day which left 76 people dead. Afterwards, Nasser published a simple six-point program in Rose al-Yūsuf to dismantle feudalism and British influence in Egypt. In May, Nasser received word that Farouk knew the names of the Free Officers and intended to arrest them; he immediately entrusted Free Officer Zakaria Mohieddin with the task of planning the government takeover by army units loyal to the association.
Who did Nasser enlist to plan the Free Officer's coup?
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The answer: Zakaria Mohieddin


The problem: Answer a question about this article:
In the 20th century after decades of intense warfare and political turmoil terms such as "Near East", "Far East" and "Middle East" were relegated to the experts, especially in the new field of political science. The new wave of diplomats often came from those programs. Archaeology on the international scene, although very much of intellectual interest to the major universities, fell into the shadow of international relations. Their domain became the Ancient Near East, which could no longer be relied upon to be the Near East. The Ottoman Empire was gone, along with all the other empires of the 19th century, replaced with independent republics. Someone had to reconcile the present with the past. This duty was inherited by various specialized agencies that were formed to handle specific aspects of international relations, now so complex as to be beyond the scope and abilities of a diplomatic corps in the former sense. The ancient Near East is frozen in time. The living Near East is primarily what the agencies say it is. In most cases this single term is inadequate to describe the geographical range of their operations. The result is multiple definitions.
Where did the new wave of diplomats often come from?
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The answer: the new field of political science


The problem: Answer a question about this article:
Infrared radiation is used in industrial, scientific, and medical applications. Night-vision devices using active near-infrared illumination allow people or animals to be observed without the observer being detected. Infrared astronomy uses sensor-equipped telescopes to penetrate dusty regions of space, such as molecular clouds; detect objects such as planets, and to view highly red-shifted objects from the early days of the universe. Infrared thermal-imaging cameras are used to detect heat loss in insulated systems, to observe changing blood flow in the skin, and to detect overheating of electrical apparatus.
Along with industrial and medical, in what applications is infrared radiation used?
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The answer:
scientific