I learned a lot from Dr. Pascual's critics. They say that climate change in places like Kericho isn't the real reason that malaria cases are on the increase. Changes in the area's geography, like planting more crops or destroying more trees – parasites becoming immune to medicines – all might contribute to rising mosquito populations and more cases of malaria.

And, besides, these critics say they're not even sure the climate in Kericho is changing so much that it would affect insects like mosquitoes.

I wish I could put this chart in those critics' hands right now. I got a copy of it during the conference in Mombasa. And the math seems pretty straight to me.