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1. The High Frontier (2021 Documentary on Gerard K. O’Neill, 1970s space visionary) (youtube.com) 1 point by Robotbeat on Oct 9, 2021 | past | 1 comment 2. Ask HN: What are the most legitimate carbon emissions offsets one can buy? 4 points by Robotbeat on Jan 27, 2019 | past | 4 comments

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