Scientists may have cracked the case of whether a seven-million-year-old fossil could walk upright. A new study found strong anatomical evidence that Sahelanthropus tchadensis was bipedal, including a ...
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Theodore Roosevelt's legacy
ABC News' Elizabeth Schulze is at the Theodore Roosevelt Presidential Library in Medora, North Dakota, speaking with two of ...
If you want your children to understand it, make them watch "The Thread of Liberty: Keeping Our Republic"—because they sure ...
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