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English
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Geography plays one of the most important roles in a civilization's development, and this holds true for the ancient Greeks. But it is the Greek experiments in government that drove much of their success. Tour the ancient Greek city-states of Athens, Sparta, and more to find out how they were governed, and how they dealt with conflicts.
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English
Description
We can envision scenarios for the year 2100, but what about 2600? Or 3100? Reflect on the possibilities, drawing from the imaginative work of futurists and science fiction writers. See where human civilization might go - and what might happen to us along the way - on this planet, or in the universe, as Homo sapiens, or even as some future species.
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English
Description
Are drugs the only thing humans can get addicted to? What about behaviors? To answer this question, take a look at what happens inside the brain of a compulsive gambler. As this case study reveals, many of the same neurochemical processes of drug abuse - from genetic predisposition to dopamine release - also accompany addiction to behaviors.
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English
Description
The course concludes with an exploration of other potentially addictive behaviors. Professor Polk argues that some artificial stimuli - junk food, pornography, and video games to name three - are "supernormal," meaning that they actually activate the brain's reward circuit more strongly than natural stimuli do, leading to some of the same neurological effects as drug use.
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English
Description
Among significant Neolithic (New Stone Age) sites, explore Gobekli Tepe in Turkey, whose imposing stone rings are the oldest known examples of monumental architecture in the early Near East. Continue to Jericho, with its extraordinary tombs and famous tower, and Turkey's Catalhoyuk, noted for its mysterious houses built without doors or windows.
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English
Description
Sub-Saharan Africa has often been overlooked by outside historians who are considering the rise of human civilization, yet nations such as Mali and Ghana and the Bantu and Swahili civilizations all have a rich and fascinating history. Survey the story of Africa with a special focus on sub-Saharan geography, people, and civilizations.
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English
Description
"This course is a set of 36 lectures exploring world history through the study of great events that have shaped history. The course rests on the conviction that history is not the story of anonymous social and economic movements. History is made by great individuals, great ideas, and great events."--p.1 of course guidebook.
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English
Description
"This set of 24 lectures takes the mystery out of investing by giving simple and clear explanations of investments and the process of investing. You'll learn practical lessons about how to choose the best investments for your portfolio and how to plan your financial goals."--p. 1 of course guidebook.
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English
Description
Caffeine and nicotine are two of the most common psychoactive drugs in our society. How do they work? How dangerous are they? After reviewing how each of these drugs affects the brain - and why nicotine in particular is so addictive - Professor Polk offers several strategies to quit tobacco use.
Language
English
Description
Caffeine and nicotine are two of the most common psychoactive drugs in our society. How do they work? How dangerous are they? After reviewing how each of these drugs affects the brain - and why nicotine in particular is so addictive - Professor Polk offers several strategies to quit tobacco use.
Language
English
Description
Caffeine and nicotine are two of the most common psychoactive drugs in our society. How do they work? How dangerous are they? After reviewing how each of these drugs affects the brain - and why nicotine in particular is so addictive - Professor Polk offers several strategies to quit tobacco use.
Series
Language
English
Description
Business consultant, former military intelligence officer, and award-winning Professor Stanley K. Ridgley of Drexel University has crafted these 24 lectures as an accessible way to engage with thinking that will help you think and act more strategically in business and in your own life, whether you're the CEO of a Fortune 500 company or you're preparing to embark on a new career path.
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