According to a new research by archaeologists from the University of Gothenburg, inhabitants of a small Neolithic farming village located in modern-day Sweden may have used fertilizers 5,000 years ago. Elevated levels of the Nitrogen-15 isotope detected in plant macrofossils from a Neolithic farming village near Falköping, Sweden, indicate that its inhabitants may have used fertilizers to grow barley and wheat (Agricultural Research Service / Usda.gov) Gothenburg...