He also wrote a huge amount of non-fiction in which he presented all sorts of science in an accessible fashion - "The Left Hand of the Electron" springs to mind

He also wrote a huge amount of non-fiction in which he presented all sorts of science in an accessible fashion - "The Left Hand of the Electron" springs to mind as a favourite selection of his essays, covering everything from chirality in life to an exploration of polar solvents. Re: relevance - I'd argue that both he and PKD are more relevant than ever - Asimov probed the forces that shape society, the impact of automation, the decadent decay of empire, and the all too human reactions to forces both inhuman and inhumane, and PKD probed how we each shape our individual and collective realities, and the myriad fashions in which this could go disastrously wrong with ever escalating and increasingly magical technologies. Hell, I almost think it should be compulsory that policymakers are made to read their respective corpii!