This week’s science roundup covers 2025’s near-record heat, a new mpox strain and fresh clues about why hobbits vanished 50,000 years ago. Journalist Karen Hao unpacks the rise of AI “empires,” their ...

GCSE and A-levels in Wales cancelled for 2021 英国威尔士取消2021年 GCSE 及 A-level 考试 Episode 201207 / 07 Dec 2020 How will students be assessed in Wales next year? Study measures urban light pollution with ...