The presentation will discuss the global challenges of Energy and Environment, and how addressing environmental issues will be important for us going forward. The importance of the energy-environmental nexus will be highlighted. The energy�environment issue will be described in a spatio-temporal manner. The spatial dimension discusses the need for energy efficiency in the developed parts of the world, and the need for environmental sustainable generation of energy in the developing regions of the globe. The temporal dimension will highlight the importance of developing energy technologies applicable over multiple time scales� from current fossil fuel use (e.g., novel modalities in coal combustion, biomass combustion), to sustainable solar energy technologies (using novel nanostructured materials)- will be discussed. Applications of concepts of aerosol science and engineering that aid in addressing this �global challenge problem� will be discussed.A trans-disciplinary approach is essential to tackle this global challenge issue. Furthermore, as the problem has global dimensions, it is essential to tackle it with robust international collaborations. Examples of both a trans-disciplinary approach for selected energy-environment problems, and of effective international collaborations will be presented.

Energy-environment nexus: Global challenge problem being tackled by international collaborations

248th National Meeting (2014)

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