About: http://webisa.webdatacommons.org/25240162

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	All this time, except for the last 150 years or so, the CO2 levels were at 280ppm or lower.
http://www.w3.org/ns/prov#wasQuotedFrom	discovermagazine.com