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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
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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.
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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
In this course on thermodynamics, you will study a subject that connects deep and fundamental insights from the atomic scale of the world all the way to the highlight applied. Thermodynamics has been pivotal for most of the technologies that have completely revolutionized the world over the past 500 years.
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"What is our latest picture of some of the most inexplicable features of the universe? What still remains to be uncovered? What are some of the next avenues of exploration for today's chemists, physicists, biologists, and astronomers? ... This lecture series is a wonderful entrée to scientific pursuits that lie at the very heart of the history and nature of our universe."--Publisher.
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English
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This course is designed to provide the skills that form the groundwork of your understanding of numbers and arithmetic. Mastery of these skills is essential for students preparing to study higher-level mathematics, such as algebra, trigonometry, and calculus. However, this course is also ideal for learners who have found arithmetic frustrating and mysterious in the past or who are looking to refresh their memories and sharpen their skills in a subject...
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Professor Connel Fullenkamp offers an essential primer on financial markets, from its functions, strengths, and possibilities to its weaknesses and vulnerabilities. He reveals the interconnected workings of the financial markets and how society's financial strength-- and your own-- depend on money continuing to move through these channels. You'll not only gain a new appreciation for the variety of financial products and services available to you,...
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Examines Earth's origin from simple atoms that were created in the Big Bang, transformed into heavy elements in stellar explosions, then forged into a planet inside the nebula that gave birth to the solar system. Like many other planets, Earth went through phases of melting, volcanism, and bombardment by asteroids. But only on Earth did events lead to a flourishing biosphere--life. And once life was established, it drove the evolution of our planet...
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Economic forces are everywhere around you. You're made aware of that whenever you reach for your wallet, apply for a loan, shop for health care, or try to figure out the best credit card to carry. But that doesn't mean you need to passively accept whatever outcome those forces might press upon you. Instead, you can learn how to use a small handful of basic nuts-and-bolts principles to turn those same forces to your own advantage. Making a few simple...
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This course takes a mathematical approach to playing games and solving puzzles. In this course, you will be introduced to all kinds of games, from games of pure strategy (like chess) to games of pure luck (like many casino games) to games that mix strategy and luck (like blackjack, backgammon, and poker). You will analyze puzzles that have stumped people for centuries to modern favorites like sudoku and Rubik's Cube. You will improve your ability...
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This lecture series focuses on gravity. Gravity is both the most familiar and the strangest of all the forces of nature. Though it is extraordinarily weak- it takes a whole planet to exert a fairly modest pull on a falling apple- it can act over astronomical distances. This is why gravity is the dominant force shaping the cosmos on the largest scale.
20) Chemistry
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English
Description
Many students struggle in high school chemistry, feeling confused and uncertain even if they earn a good grade. Why? What can be done to help students succeed in this vitally important course? Success in chemistry doesn't require any special intellectual gifts or talents or advanced mathematical skill--it does require grasping the ideas behind key topics in chemistry. This course is designed to give students a deep and thorough understanding of the...
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