The operator of the Ukrainian dam that was destroyed earlier this week has said water levels have fallen below a critical point for being able to supply cooling water to the Zaporizhzhia nuclear power station.
The Kakhovka dam on the Dnieper River was destroyed on Tuesday, forcing thousands of people to flee their homes after nearby towns and villages were flooded.
Nuclear power stations require large volumes of water from coasts or estuaries for cooling. If this cooling mechanism fails, the temperature in the nuclear reactor core can rise dangerous high.