About: http://webisa.webdatacommons.org/405630528

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	The likeliest explanation is that the boom was a meteorite strike, and the reason they have not found any physical evidence is that it happened in the middle of a wasteland the size of England, by Mason's estimate.
http://www.w3.org/ns/prov#wasQuotedFrom	straightdope.com