Bitcoin Research Firm and Environmental Watch Dog Test World’s First Air Quality Ledger Share Tweet Share Share Email Comments Global partnership between PlanetWatch and Algorand tests new blockchain air quality sensors and ledger Related Items: Share Tweet Share Share Email Click to comment Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Notify me of follow-up comments by email. Notify me of new posts by email. This site uses Akismet to reduce spam. Learn how your comment data is processed.