Development of Middle Stone Age innovation linked to rapid climate change : Nature Communications
Major innovational pulses occurred at times when South African climate changed rapidly towards more humid conditions, while northern sub-Saharan Africa experienced widespread droughts, as the Northern Hemisphere entered phases of extreme cooling.
The book you want is Paleoclimate and Evolution, With Emphasis on Human Origins, edited by Elisabeth S. Vrba, 1995.
ReplyDeletehttp://yalepress.yale.edu/book.asp?isbn=9780300063486
After reading this book, I signed up for an M.S. in Earth science. Good read. If your library does not have it they can borrow it for you via interlibrary loan. You can browse it in Google Books.