The global environmental disruption caused by human activity is firmly entrenched as a scientific fact. The present paper looks at the Investor-State Dispute Settlement (ISDS) system and inquires whether this is the most suitable transnational venue for resolving investment disputes that have an environmental component. This culminates essentially in whether arbitration is a legitimate forum and whether privately appointed arbitrators appropriately can resolve environmental-related disputes. These disputes are bound to increase in frequency because host-States are also partaking in global efforts to respond to environmental challenges.