Stone tools found in Ukraine are the oldest evidence found of human presence in Europe, according to research published on Wednesday. New analysis has confirmed that layers of sedimentary rock surrounding stone tools unearthed from the archaeological site at Korolevo, in Ukraine’s west near the border with Romania, date back to 1.4 million years ago. Until now, the earliest inhabited location in Europe was believed to be Atapuerca in Spain some 200,000-300,000 years later. The researchers said that the findings support the hypothesis that early hominins colonized Europe from the east or south-…