STEM与日常科技·英语30篇（3）
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DNA Storage Long-Term Stability Discussion
DNA存储长期稳定性讨论
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DNA stores genetic information for millions of years in fossils—so scientists now encode digital files like books or videos into synthetic DNA strands.DNA能在化石中保存遗传信息数百万年——因此科学家如今将书籍或视频等数字文件编码进人工合成的DNA链中。
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One gram of dried DNA can theoretically hold 215 million gigabytes—enough for all Netflix streaming data for 100 years.一克干燥DNA理论上可存储2.15亿GB数据——足以容纳Netflix百年流媒体内容。
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Unlike hard drives that degrade in 5–10 years or magnetic tape needing climate-controlled vaults, DNA lasts centuries if kept cold and dry.与5至10年即退化的硬盘，或需恒温恒湿保险库保存的磁带不同，DNA只要保持低温干燥，便可保存数百年。
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Errors creep in during synthesis and sequencing, so researchers add error-correcting codes—like digital redundancy in QR codes.DNA合成与测序过程中会产生错误，因此研究人员加入纠错码——原理类似二维码中的数字冗余。
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Current costs remain high ($1M per GB), but prices drop 30% yearly as gene-editing tools become cheaper and more precise.当前成本仍很高（每GB约100万美元），但随着基因编辑工具日益廉价精准，价格正以每年30%的速度下降。
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Archives in Norway and Japan already test DNA storage for preserving national records, languages, and cultural heritage.挪威和日本的档案机构已开始用DNA存储技术保存国家文献、语言及文化遗产。
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Its biggest advantage isn’t capacity or speed—it’s longevity: DNA won’t become obsolete, since reading it only requires basic biochemistry.其最大优势并非容量或速度，而是超长寿命：DNA不会过时，因为读取它只需基础生化技术。
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While not for daily backups, DNA offers humanity’s first truly future-proof medium for storing irreplaceable knowledge across millennia.尽管不适用于日常备份，DNA却是人类首个真正面向未来、可跨千年保存不可替代知识的存储介质。