Ian Lockwood / Muddy water flows through the Ravana Ella falls after a pre-monsoon deluge. It is an indicator of aggressive agricultural practices upstream. Sri Lanka, August 2010

Paul D Stewart / Illustration of iguanodon and megalosaurus by Riou in the revised English 1867 translation of Louis Figuier's 'Earth before the Deluge' 1863. The figure shows impressions after the collaboration betwe...

Paul D Stewart / Illustrations of Hyena (Crocuta sp.) jaw bones, 1823 copper engraving of a modern hyena (top) and British prehistoric hyena jawbones (below) from Kirkdale cave (below) with an actual cave hyena (Crocu...

Paul D Stewart / Johann Jakob Scheuchzer (born August 2nd 1672 - died June 23rd 1733). Swiss traveller naturalist and geologist. Contemporary Folio size Portrait copper engraving at 59 years old (1731) from Physica Sa...

Paul D Stewart / 1731 Physica Sacra (Sacred Physics) by Johann Scheuchzer (1672-1733) loading the Ark, folio copper engraving drawn by a team of engravers under the direction of Johann Andreas Pfeffel (1674-1748). The...

Paul D Stewart / Illustration of extinct fossil giant salamander (Andrias sheuchzeri), first named as Homo diluvii testis (evidence of a diluvian human or witness of the flood) from the work of Johann Jakob Scheuchzer...