Archaeologists discover ancient tools dating back millions of years
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When Whales Walked: Journeys in Deep Time (FULL SPECIAL) | PBS America
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After 50 years, Lucy faces rivals with other human ancestors
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Thousands of creative works enter public domain
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Why Food Prices Are Still So High In The U.S.
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Archaeologists discover 476,000 year old structure, thought to be oldest known wooden structure ...
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Mésopotamie – Les Sumériens
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How a chef's unconventional career led him to culinary stardom
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