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The greenhouse gases emissions produced by industry and power plants are the cause of climate change. An effective approach for limiting the impact of such emissions is adopting modern Carbon Capture and Storage (CCS) technology that can capture more than 90% of carbon dioxide (CO 2 ) generated from power plants.This paper presents an evaluation of state-of-the-art technologies used in the capturing CO 2 . The main capturing strategies including post-combustion, pre-combustion, and oxycombustion are reviewed and compared. Various challenges associated with storing and transporting the CO 2 from one location to the other are also presented. Furthermore, recent advancements of CCS technology are discussed to highlight the latest progress made by the research community in developing affordable carbon capture and storage systems. Finally, the future prospects and sustainability aspects of CCS technology as well as policies developed by different countries concerning such technology are presented.

This work discusses and provides a critical expose of some of the newly emerging renewable energy technologies with special concentration on marine energy generation. The work shows that there are several promising new developments in harvesting marine energy and it examines some of these technologies and discusses their advantages and some of the obstacles that are impeding the commercialisation of these emerging technologies. This includes wave energy harvesting, tidal energy harvesting, ocean thermal energy and the utilisation of salinity gradients for electricity generation. The work emphasises the fact that these new emerging technologies are currently at the developing stages and has a long way to go before successful commercialisation and wide adoption become the norm. The work stresses the need for more research and developmental work to address several of the technical issues that need to be addressed including devices designs, their installation and maintenance, the infrastructure which includes the grid and power transmission as well as losses, their use in arrays, and their longevity. This work underlines the lack of reliable studies on the long term impacts of these technologies on both the marine environment and nearby habitations and highlights the need for proper environmental and social impact assessments of these technologies.

Prospects and challenges of concentrated solar photovoltaics and enhanced geothermal energy technologies. Stoten (2018),

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