A 4,000-year-old copper dagger has been unearthed in northeastern Italy's Tina Jama Cave, according to a SciNews report. Federico Bernardini of Ca' Foscari University said that the dagger is similar to copper daggers uncovered in Slovenia. "The findings are essential for understanding the technological, cultural, and social transformations in Europe during that period," added Elena Leghissa of the Slovenian Academy of Sciences. "The discovery of the copper dagger is an exceptional event that raises questions about the cave's use," she added. A structure made of stone slabs and blocks between about 2000 and 1500 B.C. was also excavated near the...