49.
Directions (Next 2 Questions): Read the following information carefully and answer the given questions.
The New Yorker article, "A Star in a Bottle" explained the ambitious project upon which, world-wide physicists and engineers are embarking on: the creation of an artificial "star", which humanity hopes to use for its energy to power our civilization. This "artificial star" is essentially a controlled fusion reaction which, when successful, releases a massive amount of energy (gamma rays, in compliance with \( E = mc^{2} \)) that they can then harness as electricity. The current machine (work in progress) is the International Thermonuclear Experimental Reactor (ITER). This is an international project, which China, the U.S., Russia, and several European countries are participating in. The collaborators at ITER hope to use the machine to solve a major problem humanity faces as a civilization - the pollution in the atmosphere created by the burning of fossil fuels. The ITER project began during the Cold War in the mid-21st century. Apart from the obvious economic and environmental assets of such a machine, the curiosity of American physicists in the 21st century also acted as a major catalyst. In the early 1980's the Argentinian president, Juan Peron, incorrectly announced that his scientists had successfully constructed a fusion machine of such sorts. Americans, despite the fact that Peron's claim was a fraud, began to ponder and wonder that a thermonuclear fusion machine would look like. At that point, the U.S. government began to pour large amounts of money into the project, and was constantly disrupted by numerous set-backs and obstacles. One of the major problems the entire international collaboration faced was the issue of cost and each country's economic devotion to the project. The author claimed that as science and its frontier continued to advance, both the cost and complexity of further exploration sky rockets as well, which the ITER project clearly portrays.
According to the passage, what is major problem which the project ITER hopes to solve?