玛雅古城为何衰落：干旱之外的多重线索
古典期玛雅南部低地的许多城市在数百年间逐渐衰落，并非一夜之间消失。铭文、聚落遗址与气候证据显示，长期干旱可能与政治冲突、资源压力交织，促使人口迁移和权力中心转移。 继续阅读 玛雅古城为何衰落：干旱之外的多重线索
The Andreasson Affair: A Case Built on Recovered Memory
Betty Andreasson’s reported 1967 encounter became a prominent abduction case through years of interviews and hypnosis. Its record shows both how the story developed and why its evidence remains difficult to assess. 继续阅读 The Andreasson Affair: A Case Built on Recovered Memory
What a One-Week GitHub Star Spike Can—and Cannot—Show
A weekly ranking can capture a sudden burst of attention, but a repository’s star growth is only a snapshot. Here is how to read that signal without mistaking popularity for proof of lasting value. 继续阅读 What a One-Week GitHub Star Spike Can—and Cannot—Show
近距离接触的分类，究竟记录了什么
“近距离接触”是一套描述不明飞行物目击报告的分类方法，不是外星生命存在的证明。本文从海尼克提出的分类切入，说明目击、近距观察与生物报告之间的差别。 继续阅读 近距离接触的分类，究竟记录了什么
The Bloop Beneath the Pacific
In 1997, underwater sensors recorded an exceptionally powerful, low-frequency sound in the South Pacific. The likely explanation is ice, but the recording’s origin has never been pinned to a specific event. 继续阅读 The Bloop Beneath the Pacific
仓库盘点中的AI：从货架照片到库存复核
仓库盘点不一定要逐箱清点。本文以货架视觉识别为例，梳理人工智能如何辅助读取商品与库位信息、发现差异，并说明数据准备、人工复核和现场限制。 继续阅读 仓库盘点中的AI：从货架照片到库存复核
The Antikythera Mechanism’s Missing Story
Recovered from an ancient shipwreck, the Antikythera Mechanism reveals sophisticated astronomical knowledge—but its maker, original setting, and journey beneath the sea remain uncertain. 继续阅读 The Antikythera Mechanism’s Missing Story
黎明前为何有时会显得更暗
日出前的天空通常逐渐变亮，但有些清晨，人们会觉得天色短暂变暗。理解这一现象，需要分清曙光、云层变化与视觉适应，而不是把它视作普遍的天文过程。 继续阅读 黎明前为何有时会显得更暗