【正文】 the peoples of the pacific islands had such expert knowledge of astronomy as well as navigation that they were able to navigate over vast stretches of Open Ocean. Uh, it39。t even to look at my major? Advisor: It is not that they don39。s sounds great! Student: Yeah… the first article I wrote it was profile of the chemistry professorthe one whose name teacher the year. My article ran on the front page. When I saw my name, I mean my byline in print, I was hooked . Now I know this is what I want to do be a reporter. Advisor: Isn39。 otherwise they wouldn?t survive extreme hot or cold conditionssweating, panting, swimming to cooler or warmer water。 ducking into somewhere cool like a burrow or a hole under a rock。t it great to discover something that you really enjoy? And I read that the article too? It was very good. Student: To be honest, the articles got a lot of editing. In fact I barely recognized a couple of paragraphs. But the editor explained why the changes were made. I learned a lot and my second article didn39。t look at it… it is… well, having a degree in something other than journalism should actually work to your advantage. Student: How? Advisor: Most journalism specialized these days. They only write about science or business or technology for example. Is there a type of reporting you think you may like to specialize then? Student: Well… I think it can be really cool to cover the Supreme Court. I mean… their decision affects so many people. Advisor: That is really a goal worth striving for. So, why not continue major in political science? And as elective, you could take some PreLaw classes like Constitution Law, and as for you work on the student newspaper paper, maybe they let you cover some local court cases once that the student and professor here would want to read about. Student: Do you know of any？ Advisor: I do. Actually, there is case involving this puter software program that one of our professors wrote. The district courts decide in if the university entitle to any of our professors39。s even possible that Polynesian navigators had already sailed to the Americas, centuries before Columbus. Narrator: Listen to part of the lecture in the archaeology class Professor: When we think of large monumental structures built by early societies and Egyptian pyramid probably es to mind. But there are some even earlier structures in the British Isles also worth discussing, and besides the wellknown circle of massive stones of Stonehenge which don?t get me wrong is remarkable enough, well, other impressive Neolithic structures are found there too. Oh, yes, we are talking about the Neolithic period here, also called new Stone Age, which was the time before stone tools began to be replaced by tools made by bronze and other metals. It was about 5000 years ago, even before the first Egyptian pyramid that some of amazing Neolithic monuments tombs, were racketed at the very size around ironed Great Britain and coastal islands nearby. I am referring particular to structures that in some cases, look like ordinary natural hills. But we definitely build by humans, wellanized munities of human?s to enclose a chamber or room within stone walls and sometimes with a high, cleverly designed sealing of overlapping stones. These structures are called Passage Graves, because in the chamber, sometime several chambers in fact, could only be entered from the outside through a narrow passage way. Michael: Excuse me, professor, but you said Passage Graves. Was this just monument to honor the dead buried there or were they designed to be used somehow by the living? Professor: Ah, yes! Good question, Michael. Besides being built as tombs , some of these Passage Graves were definitely what we might call Astronomical Calendars, with chambers they flooded with some light on the certain special days of the year, witch must see miraculous and inspired good dealer of they really just wonder. But research indicates that not just light but also the physics of sound help to enhance this religious experience. Michael: How so? Professor: Well, first the echoes . When religious leaders started chanting with echoes bounced off the stonewalls over and over again, it must seem like a whole chorus of other voices, spirits of God maybe join in. But even more intriguing is what physicists called Standing Waves . Basically, the phenomenon of Standing Waves occurs when sound waves of the same frequency reflect off the walls and meet from oppos