Smart dust is a very interesting topic for the future of IoT with even larger and larger amounts of data. I see SAS moving forward with analyzing data with their IoT Solution. I also found these articles to be helpful.
https://www.forescout.com/company/blog/smart-dust-future-global-iot/
https://www.forbes.com/sites/bernardmarr/2018/09/16/smart-dust-is-coming-are-you-ready/#662ca9925e41
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