下载：人工智能的自我改进难题，及背后热度驱动力

<p><em>这是今天的</em><a href="https://forms.technologyreview.com/newsletters/briefing-the-download/?_ga=2.179569122.736533416.1649661040-405833893.1649413289"><em>《The Download》</em></a><em>，我们面向工作日的时事通讯，为您提供全球科技领域的每日动态。</em><br></p> <h3 class="wp-block-heading">人工智能的递归式自我改进可能不会那么快到来</h3> <p>目前人工智能行业最大胆的承诺是，AI很快将能几乎无需人类监督地自我改进。但一项新研究表明，实现这一目标可能仍需时日。</p> <p>研究人员发现，AI智能体仍然无法进行开放式AI研究——这类研究涉及没有明确答案的自由探索，需要做出真正突破所必需的判断力和创造力。</p> <p>当前的关键问题是，开放式研究对于递归式自我改进有多重要——以及AI系统是否能通过仅改进更狭窄的任务，无需开放式研究也能一步步实现目标。</p> <p><a href="https://www.technologyreview.com/2026/08/18/1142188/ai-recursive-self-improvement/?utm_source=the_download&amp;utm_medium=email&amp;utm_campaign=the_download.unpaid.engagement&amp;utm_term=*%7CSUBCLASS%7C*&amp;utm_content=*%7CDATE:m-d-Y%7C*">了解为何研究结果可能会削弱递归式自我改进即将实现的断言</a>。</p> <p><em>—Michelle Kim</em></p> <h3 class="wp-block-heading">MIT科技评论音频版：今夏热浪背后的原因，以及为何2027年可能更糟</h3> <p>今夏对北半球大部分地区来说酷热难耐。六月和七月创下自有记录以来欧洲最热的两个月纪录，美国本土七月经历了有记录以来最热的月份，韩国也录得有史以来最高气温。</p> <p>气候变化使得热浪更加频繁和剧烈。但另一个因素也在发挥作用：厄尔尼诺现象，它已经在加剧，预计明年将对全球气温产生更大影响。</p> <p><a href="https://www.technologyreview.com/2026/08/13/1141788/summer-heat-el-nino/?utm_source=the_download&amp;utm_medium=email&amp;utm_campaign=the_download.unpaid.engagement&amp;utm_term=*%7CSUBCLASS%7C*&amp;utm_content=*%7CDATE:m-d-Y%7C*">了解今夏极端高温背后的原因——以及为何2027年可能更热</a>。</p> <p><strong><br></strong><strong>这是我们最新一篇</strong><a href="https://www.technologyreview.com/2026/08/13/1141788/summer-heat-el-nino/?utm_source=the_download&amp;utm_medium=email&amp;utm_campaign=the_download.unpaid.engagement&amp;utm_term=*%7CSUBCLASS%7C*&amp;utm_content=*%7CDATE:m-d-Y%7C*"><strong>文章</strong></a><strong>被制作成MIT科技评论音频版播客，我们每周在</strong><a href="https://open.spotify.com/show/6QefEeY1IKYVn5w6nUV83Y"><strong>Spotify</strong></a><strong>和</strong><a href="https://podcasts.apple.com/gb/podcast/mit-technology-review-narrated/id1523584878"><strong>Apple Podcasts</strong></a><strong>上发布。只需在任一平台导航至MIT Technology Review Narrated并关注我们，即可在内容发布时获取所有新内容。</strong></p> <p class="has-medium-font-size"><strong>必读精选</strong></p> <p><em>我从互联网上为您筛选出今日最有趣、最重要、最惊人或最引人入胜的科技新闻。</em></p> <p><strong>1 OpenAI因安全顾虑暂停部分模型研发工作</strong><br>该公司表示其Astra模型达到了"关键"风险阈值。（<a href="https://www.theguardian.com/technology/2026/aug/18/open-ai-pause-hack">卫报</a>）<br><em>+ 这次放缓使其有别于Anthropic的应对策略。</em>（<a href="https://www.axios.com/2026/08/19/openai-astra-safety-altman-anthropic">Axios</a>）<br><em>+ OpenAI在Hugging Face黑客事件后进行了安全更新。</em>（<a href="https://www.theverge.com/ai-artificial-intelligence/981640/openai-security-changes-ai-hugging-face-hack">Verge</a>）<br><em>+ 该公司还推出了面向青少年的ChatGPT版本。</em>（<a href="https://apnews.com/article/openai-chatgpt-teens-ai-safety-650cb35591de6546054d6c4e73b3290a">美联社</a>）</p> <p><strong>2 中国人形机器人制造商宇树科技上市首日股价飙升629%</strong><br>此次IPO凸显了中国在人形机器人领域的领先地位。（<a href="https://www.bloomberg.com/news/articles/2026-08-19/unitree-ipo-why-investors-are-betting-big-on-china-s-humanoid-robots">彭博社</a> $）<br><em>+ 宇树已成为中美科技竞赛的关键参与者。</em>（<a href="https://www.reuters.com/world/asia-pacific/chinese-humanoid-robot-maker-unitree-set-jump-over-600-shanghai-debut-2026-08-19/">路透社</a> $）<br><em>+ 它是全球最大的人形机器人公司，且已实现盈利。</em>（<a href="https://www.bbc.com/news/articles/c0qv4w9492zo">BBC</a>）<br><em>+ 人形机器人背后隐藏着人力劳动。</em>（<a href="https://www.technologyreview.com/2026/02/23/1133508/the-human-work-behind-humanoid-robots-is-being-hidden/?utm_source=the_download&amp;utm_medium=email&amp;utm_campaign=the_download.unpaid.engagement&amp;utm_term=*%7CSUBCLASS%7C*&amp;utm_content=*%7CDATE:m-d-Y%7C*">MIT科技评论</a>）</p> <p><strong>3 中国开始允许英伟达H200芯片进入大陆</strong><br>字节跳动和腾讯近期各自获得了约1万颗处理器。（<a href="https://www.ft.com/content/6c5650fb-969d-4d4e-80d6-8d11002a8cf7?syn-25a6b1a6=1">金融时报</a> $）<br><em>+ 一款新的中国AI模型可能对防御者和黑客都有帮助。</em>（<a href="https://www.wired.com/story/zai-open-weight-ai-models-release-cybersecurity-hacking/">连线</a> $）</p> <p><strong>4、5 Flock的新AI工具让警方能通过行动轨迹识别驾驶员</strong><br>这远不止是追踪车牌。（<a href="https://www.wired.com/story/flock-safety-os-investigate/">连线</a> $）<br><em>+ Flock的支持者们忽略了什么。</em>（<a href="https://www.technologyreview.com/2026/08/17/1142200/what-flocks-defenders-are-missing/?utm_source=the_download&amp;utm_medium=email&amp;utm_campaign=the_download.unpaid.engagement&amp;utm_term=*%7CSUBCLASS%7C*&amp;utm_content=*%7CDATE:m-d-Y%7C*">MIT科技评论</a>）</p> <p><strong>6 检察官认为Meta故意让儿童沉迷Facebook和Instagram</strong><br>这项指控是在一场具有里程碑意义的审判首日提出的。（<a href="http://bbc.co.uk/news/articles/cly5r7vr7q1o">BBC</a>）<br><em>+ 一位科学家正在绘制一幅关于童年缺失的地图。</em>（<a href="https://www.technologyreview.com/2026/08/14/1141354/deanne-taylor-gene-expression-children/?utm_source=the_download&amp;utm_medium=email&amp;utm_campaign=the_download.unpaid.engagement&amp;utm_term=*%7CSUBCLASS%7C*&amp;utm_content=*%7CDATE:m-d-Y%7C*">MIT科技评论</a>）</p> <p><strong>7 即便ICE也对Meta智能眼镜存在伦理担忧</strong><br>出于隐私考虑，其已禁止在工作场所使用。（<a href="https://www.nytimes.com/2026/08/18/technology/ice-meta-smart-glasses.html">纽约时报</a> $）<br><em>+ Anduril与Meta正在为战争打造智能眼镜。</em>（<a href="https://www.technologyreview.com/2026/05/18/1137412/inside-anduril-and-metas-quest-to-make-smart-glasses-for-warfare/?utm_source=the_download&amp;utm_medium=email&amp;utm_campaign=the_download.unpaid.engagement&amp;utm_term=*%7CSUBCLASS%7C*&amp;utm_content=*%7CDATE:m-d-Y%7C*">MIT科技评论</a>）</p> <p><strong>8 X平台的算法会学习你讨厌什么——并向你展示更多</strong><br>研究发现，民主党人受到的影响甚至更大。（<a href="https://www.404media.co/xs-algorithm-feeds-off-ragebait-and-impacts-democrats-more-study-finds/">404 Media</a>）</p> <p><strong>9 一位物理学家提出，宇宙可能永远重复自身</strong><br>同样的星系</p>