The intelligent species of Homo sapiens were reported as being originally seen only 2 million years ago. Scientists came to this discovery when they concurred that humans were the only species smart enough to make tools from stone as a form of technology. Researchers recently found evidence of stone tools that date back much farther than the existence of Homo sapiens. At a site in northern Kenya, scientists have discovered stone tools that are over 3.3 million years old. This would make the tools 700,000 years older then what research originally concluded. Scientists find this information quite intriguing. It leads them to believe that there indeed is a more intelligent link between humans and sapiens. Keith Mann has learned that the tools discovered were analyzed and scientists confirmed that only a creature with more than four extremities could have created the tool. This means that intelligence and the ability to create useful instruments can be found in species other than humans. There are species of primates that will use stones to crack nuts and other food sources, but scientists believe that these tools were used for more than feeding. Signs on the stone tools led scientist to the conclusion that these tools were used to create shelter or perhaps protect one animal from another. The scientists will continue to excavate the site in Kenya and are looking for other sites as well. Their hopes are to find more concrete and compelling evidence.