New excavations indicate use of fertilizers 5,000 years ago

Researchers from the University of Gothenburg have spent many years studying the remains of a Stone Age community in Karleby outside the town of Falköping, Sweden. The researchers have for example tried to identify parts of the inhabitants' diet. Right now they are looking for evidence that fertilizers were used already during the Scandinavian Stone Age, and the results of their first analyses may be exactly what they are looking for.

Fuente : http://www.eurekalert.org/pub_releases/2013-04/uog...