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.
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One gram of dried DNA can theoretically hold 215 million gigabytes—enough for all Netflix streaming data for 100 years.
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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.
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Errors creep in during synthesis and sequencing, so researchers add error-correcting codes—like digital redundancy in QR codes.
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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.
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Archives in Norway and Japan already test DNA storage for preserving national records, languages, and cultural heritage.
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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.
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While not for daily backups, DNA offers humanity’s first truly future-proof medium for storing irreplaceable knowledge across millennia.