The United States will contribute $100 million toward repairs to the protective structure over the damaged reactor at the Chernobyl Nuclear Power Plant, Ukrainian President Volodymyr Zelensky said on

Forty years ago, in April 1986, there was an explosion at the Chernobyl Nuclear Power Plant. It was the worst nuclear accident in history. Then the plant was in the USSR, it is part of northern Ukraine now.

Photographs from the first days of the Chernobyl disaster and of the aftermath years later show the response, the evacuation and the long-term consequences of the world’s worst nuclear accident.

Years after the accident, more than 200,000 additional people were resettled into less-contaminated areas in nearby regions. Read more: “Chernobyl’s Hot Mess, “the Elephant’s Foot,” Is Still Lethal” Official estimates of the death toll are disputed,

Polish meteorologists have recalled their response to the Chernobyl nuclear meltdown 40 years ago, saying the accident in then-Soviet Ukraine caused a spike in radioactivity over Poland but was initially concealed by the communist authorities.

Ukrainians gathered in the city of Slavutych to remember those affected by the Chernobyl nuclear disaster 40 years ago.

The Chernobyl disaster remains the world’s worst nuclear accident, displacing hundreds of thousands and reshaping global safety standards decades later.

Russia’s invasion deepens the saga of Ukraine’s Chernobyl Exclusion Zone. A woman who fled war and ended up there says, “We overcame radiation. We will overcome Russia, too.”

"Dogs at Chernobyl are now genetically distinct … thanks to years of exposure to ionizing radiation, study finds."

Forty years since the Chernobyl nuclear disaster, officials are grappling with the impact of a 2025 Russian drone strike that set back decades of efforts to contain it. Ukrainian officials said the Russians deliberately targeted the structure,