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The RNA World concept posits that there was a period of time in primitive Earth's history - about 4 billion years ago - when the primary living substance was RNA or something chemically similar. In the past 50 years, this idea has gone from speculation to a prevailing idea. In this Review, we summarize the key logic behind the RNA World and describe some of the most important recent advances that have been made to support and expand this logic. We also discuss the ways in which molecular cooperation involving RNAs would facilitate the emergence and early evolution of life. The immediate future of RNA World research should be a very dynamic one. [ABSTRACT FROM AUTHOR]

The article explores a novel experimental and computational crosslinking and immunoprecipation (CLIP) workflow which improve the research of rna-protein interactions between the RNA-protein interaction across human genes and proteins.