Daily briefing: A unique methane-detecting satellite has been lost

Nature, Published online: 02 July 2025; doi:10.1038/d41586-025-02119-3

MethaneSAT, a satellite designed to detect sources of the most powerful greenhouse gas, has been lost 15 months into its 5-year mission. Plus, how brain scans can reveal the pace of biological ageing and what it’s like to do science with an AI team.