Answer to this week's riddle

Travis Hale

Again, the riddle:

Researchers recently found that something makes humans more attractive to mosquitoes, with possible application to malaria outbreaks in Burkina Faso. What is it?

The Answer:

Beer, actually the local brew called dolo. Source: http://www.ericpgreen.com/2010/03/12/beer-makes-people-more-attractive/