<http://schema.org/description>
"In physics, you can\u2019t get something for nothing, but superconductors offer the hope of someday breaking even. Getting them to live up to their potential has given scientists more than a few headaches in the years since they were discovered. Let\u2019s see how much you know about these wonders of electromagnetism."^^<http://www.w3.org/2001/XMLSchema#string>
<http://science.howstuffworks.com/environmental/energy/superconductivity-quiz11.htm>