SIGNAL No.1

Today's signal (26 April 2026) Ten stories, observed plainly. We open with NSIDC's report on the Arctic sea ice annual maximum tying a forty-eight-year record low, then move through the Global Forest Watch integration of NASA's DIST-ALERT, the European Space Agency releasing Sentinel-1D's SAR data, and UC Davis's ClimateSOM visualisation tool — a piece of craft work on the ethics of keeping uncertainty visible. The design and culture block covers Alexis Mark's COBE rebrand drawn from departure boards, Spoon & Tamago's five spring exhibitions across Japan, and André Fu's reopening of the Four Seasons Marunouchi as a quiet sketch of where Tokyo as a brand is heading. The technology and meaning block looks at a Nature paper using LLMs to push a knowledge graph back into satellite imagery, an arXiv preprint proposing a three-stage loop for ontology interoperability, and Hackaday's read on Anthropic's Model Context Protocol becoming the shape AI takes when it reaches into the world. Original sources live on the SORAH website.