There is growing need for effective and efficient environmental assessment tools for information technology (IT) products. This paper presents a streamlined life cycle analysis (LCA) methodology using a screening and triage approach. The methodology is applied to the case study of liquid crystal displays (LCDs). Global warming potential uncertainty is reduced by identifying and resolving uncertainty around key drivers of impact. The resolution of impact continues until a meaningful level of reduction of uncertainty is achieved, such as the ability to discriminate one class of LCD from another. © 2011 IEEE.