A Costa Rican researcher has discovered a type of mosquito that can be used to identify safe river water for human consumption.
If you're having trouble watching this video, try downloading the latest version of Flash Player or contacting your IT department.
Have any comments or questions about our video editions of IMPO? Or do you have a video you'd like to see featured in one of our deployments? Email me at Rachel.Immel@advantagemedia.com.