Editor’s note: “Behind the News” is the product of Sun staff assisted by the Sun’s AI lab, which includes a variety of tools such as Anthropic’s Claude, Perplexity AI, Google Gemini and ChatGPT. On ...

The first reports were met with disbelief. A single bomb with the explosive force to level a city; a bomb, detonated with such intensity it burned as bright as — maybe, even brighter than — the sun.

HIROSHIMA, Japan — For more than half a century, chimes have rung out across the Japanese city of Hiroshima every morning at exactly 8:15. The solemn ritual marks the precise moment Aug. 6, 1945, when ...