Does dark matter cause mass extinctions and geologic changes Feb 20, 2015 6:07:20 GMT Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Pincho Paxton on Feb 20, 2015 6:07:20 GMT Link...Does dark matter cause mass extinctions and geologic upheavals?Pincho says...Dark Matter is gravity scaling down when it is trapped, and this creates a HD environment allowing more versatility in nature, but also changes that take time to adapt to.