About: http://webisa.webdatacommons.org/202022708

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Globally the mid Holocene, after 6000 BC, and especially between 5000 and 3000 BC, was a period of cooling, as indicated for example by declining methane levels from Greenland ice cores (Blunier et al., 1995).
http://www.w3.org/ns/prov#wasQuotedFrom	pubmedcentralcanada.ca