Chernobyl disaster, 25 year later: commemoration around the world

It's early morning on April 26 in Kiev, Ukraine, where the Chernobyl nuclear disaster happened exactly a quarter century ago. On this day in 1986, reactor number four at the plant exploded, setting off a catastrophe that still reverberates far beyond the 30-kilometer exclusion zone.

Demonstrations are taking place throughout Europe. In Tokyo, anti-TEPCO protests mark the occasion and its parallel to the still-unfolding disaster at Fukushima. The "liquidators" who were sent in to clean up the radioactive mess at Chernobyl back in 1986 received medals Monday from Russian president Dmitry Medvedev, but controversy still surrounds the health impact of the dangerous work they performed. The so-called "sarcophagus" surrounding the disaster site in Kiev is leaking, and world leaders have pledged "to provide $780 million for the construction of a shelter designed to house the toxic remains for another century." But even if and when that new container is finally in place, the radioactive mess will remain active—and hazardous—for many thousands of years more.