Regeneration
Flatworm stem cells respond to distant cues, study finds
Heather Vogel Fact checked
Planarian flatworms regenerate lost body parts using stem cells steered by signals from far‑off tissues rather than nearby neighbors, research published in Cell Reports on October 15, 2025, suggests—reframing how niches regulate stem cells and hinting at future approaches to tissue repair.
Doctor Who leaves Disney+ after two seasons
The long-running sci-fi series Doctor Who is departing Disney+ in the U.S. after its two-season run on the streamer. The show will continue on the BBC with a 2026 Christmas special, while previous episodes remain available on Disney+. The departure follows Ncuti Gatwa's exit as the Doctor, with Billie Piper regenerating into the role.