If not,the thinking goes, then self-interest will lead to overuse and destruction of shared resources.

VOA: special.2009.10.16

Dr.Sweetness Siwendu treats TB patients at Site C Clinic: "It would be really great if we could have a vaccine - and if not, then at least be able to diagnose TB as soon as possible - preferably within the same day."

VOA: standard.2010.07.12