Teachers of World History might appreciate a little more background to the piece that appeared in Nature News (http://www.nature.com/news/collapse-of-aztec-society-linked-to-catastrophic-salmonella-out...).
Welcome to H-World, a network for practitioners of world history. The list gives emphasis to research, to teaching, and to the connections between research and teaching.
Some H-World subscribers might find the recent podcast by the BBC 4 "In Our Time" program on "Maths in the Early Islamic World" of interest. The program makes some world historical connections.