The 1986 reactor explosion in modern-day Ukraine is considered the world's biggest nuclear disaster.

Watch a nuclear engineer react to the world’s first reactor disaster, analyzing what went wrong and why it was so ...

Authorities assessed the damage from Monday's 7.5-magnitude earthquake, amid warnings of aftershocks and potentially larger ...

The site of the world’s worst nuclear disaster remains damaged, but so far, radiation levels outside the plant have not ...

The protective shield built around the Chernobyl nuclear disaster site in Ukraine can no longer do its job to confine ...

TOKYO -- A 2026 calendar featuring images of children still suffering health effects from the 1986 Chernobyl nuclear disaster ...

Temporary repairs are planned in 2026 to pave the way for permanent restoration, the United Nations agency said.

UN nuclear watchdog International Atomic Energy Agency (IAEA) noted that the New Safe Confinement (NSC) was “severely damaged ...

Despite the finding, the authorities have been unable to fix the damage from a drone that punctured Reactor No. 4’s outermost ...

The protective shield at the Chernobyl nuclear power plant can no longer contain radioactive material from the sites’ 1986 ...

UN nuclear watchdog warns the shield in Ukraine was damaged in a Russian drone strike in February, and can no longer perform ...