An artist's representation of a large impact on Earth. [John R. Foster/Science Source]
Caveman caused global warming to blame.
Maybe fantasies or wishful thinking or dwindling grants are enhanced by orthogonality...
![An artist's representation of a large impact on Earth. [John R. Foster/Science Source]](http://www.sciencemag.org/sites/default/files/styles/inline__450w__no_aspect/public/impact_16x9.jpg?itok=1CRio7iw)