Darwin's Kids Doodled All Over His "Origin of Species" Manuscript

We may have Charles Darwin's children to thank for the surviving handwritten pages of the naturalist's "On the Origin of Species" manuscript. Most of the original 600 pages are lost, and of the 45 pages that exist today, many were repurposed by Darwin's brood of 10 children as art supplies. »2/12/15 2:44pm2/12/15 2:44pm