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Through thousands of years, Egypt has known many moments of transformation.
WHITEHOUSE: President Obama on Transition in Egypt
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According to researchers, while many modern pets may look like those depicted in ancient Egyptian tombs or Roman mosaics, extensive cross-breeding through thousands of years has meant that no modern dog breeds can be truly classified as "ancient".
BBC: Modern dogs have 'little in common' with ancient breeds
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Through the years, thousands of people (if not tens of thousands) have tried and failed to make money trading.
FORBES: More Women Are Trading - Here's Why
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Over the years thousands of ingenious East Germans made it through, around, over, and under the Wall and other fortifications dividing the two Germanys.
FORBES: A Development In Berlin Threatens The Wall That Once Divided A Continent
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In the following years, tens of thousands of Chinese blasted tunnels through the Sierra Nevada, with great loss of life, to build the western arm of the transcontinental railway.
ECONOMIST: An official apology for the past marks a story of success
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Magnetic fields in this swirling mass are twisted into a kind of "magnetic spaghetti, " and electrically charged particles squirt out through this spaghetti at nearly the speed of light, blasting out into the universe across thousands of light-years.
WSJ: Book Review: Gravity's Engines
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Close to Spion Kop, a stone quarry spills across the track where you can search through the stones to find the remnants of flint spearheads and knife-blades made by the Ngaro people thousands of years ago.
BBC: Kayaking Australia��s Whitsunday Islands