A team of scientists has discovered mammoth bones and ancient tools that indicate that the earliest humans in the southeastern U.S. existed more than 14,000 years ago, over 1,500 years earlier than believed.
92-Year-old cancer survivor, Harriette Thompson, has become the oldest runner ever to finish a marathon.
Researchers have found the world's oldest stone tools that predate humans used. The tools found in Kenya, dates back to 3.3 million years.
