Migration section 

The last paragraph (footnote 60 as of today's date) cites a vague claim by George Weber in his magnum opus at www.andaman.org regarding survival of species "upwind" who were also "protected by being in the southern hemisphere". However, Toba is not that far from Java and Flores (only about 10 degrees of latitute) and all lie in the equatorial region where the wind pattern is Doldrums  calm and unpredictable. To declare that a mega explosion like Toba would have effects only downwind is even more strange, so I think we should cut or modify the final paragraph.