El Niño’s intensifying risks dominated the week

El Niño moved from a developing climate pattern to a widening threat, with exceptional strength and projected losses falling hardest on poorer countries. Other evidence pointed to persistent planetary change, from weakened Atlantic circulation to vanishing Papua snow.

Science also revised its picture of early Earth, as new evidence challenged oxygenation timelines while oxygen still appeared to constrain complex life. Collider research both narrowed quantum possibilities and expanded the machinery available to search for new physics, while an AI biology claim moved from discovery to reported wet-lab testing.