World’s timekeepers overhaul clock adjustments to avoid catastrophic negative leap second

An explainer examines how the largest cryptocurrency heist in history was carried out, focusing on the attack methods and security failures involved. The incident matters because it underscores the risks facing crypto platforms and could intensify scrutiny and regulation of the industry.

Fans are mourning the death of actor Sir Patrick Stewart, describing it as a big loss. The reaction highlights his wide cultural impact and the affection audiences held for him. Tributes from fans underscore his prominence as a performer.

Google DeepMind has unveiled Gemini 4 Carbon, describing it as its next frontier model, with the announcement drawing attention on Hacker News. The release signals a further step in the race among major AI labs to ship more capable frontier models. Details on capabilities and availability were not specified in the headlines.

Measles resurged in several countries as pandemic attention and resources shifted to the coronavirus, disrupting routine childhood vaccination. The gaps left millions of children unprotected and reversed years of progress toward elimination. Health experts warn the lapse could fuel larger outbreaks as global travel resumes.

Researchers suggest that an iron-rich, rusty crust on early Mars helped trap heat and maintain liquid water. The idea could help explain how Mars stayed warm and wet despite the faint young Sun.