Darrell Crawford has the oldest DNA found in North America — a genetic line that was traced back a whopping 55 generations.
Three-million-year-old tools found in Kenya reveal early humans' ability to cut food, butcher meat, and adapt to new diets.
The oldest human being in the world is Sister Inah Canabarro Lucas, a 116-year-old nun from Brazil who was born in 1908.
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Stunning discoveries and fresh breakthroughs in DNA analysis are changing our understanding of our own evolution and offering a new picture of the "other humans" that our ancestors met across Europe ...