UN climate summit reaches historic agreement on fossil fuel phase-out by 2035·Webb telescope detects organic molecules in the atmosphere of a habitable-zone exoplanet·G7 agrees joint framework on AI safety standards and mandatory disclosure rules·Alzheimer's trial drug shows 35% reduction in cognitive decline over 18 months·Ceasefire agreement collapses in Sudan as rival factions resume fighting near Khartoum·The quiet death of the open-plan office — and what replaces it·TSMC's 2nm chip enters risk production — here's what it changes·Federal Reserve holds rates steady; signals two cuts possible before year-end·UN climate summit reaches historic agreement on fossil fuel phase-out by 2035·Webb telescope detects organic molecules in the atmosphere of a habitable-zone exoplanet·G7 agrees joint framework on AI safety standards and mandatory disclosure rules·Alzheimer's trial drug shows 35% reduction in cognitive decline over 18 months·Ceasefire agreement collapses in Sudan as rival factions resume fighting near Khartoum·The quiet death of the open-plan office — and what replaces it·TSMC's 2nm chip enters risk production — here's what it changes·Federal Reserve holds rates steady; signals two cuts possible before year-end·