The Chernobyl Nuclear Accident 25 Years Later

On April 26, 1986, the world's worst nuclear disaster took place. How has the area recovered, and what lessons does it hold?

Nuclear Cover Up: World's Largest Movable Structure to Seal the Wrecked Chernobyl Reactor

To safely enclose and robotically dismantle the 25-year-old makeshift confinement sarcophagus at Chernobyl, contractors are now erecting a massive steel structure weighing more than 29,000 metric tons


What Happens During a Nuclear Meltdown?

Nuclear reactors at the Fukushima Daiichi station in Japan are critically endangered but have not reached full meltdown status. Our nuclear primer explains what that means and how the situation compares with past nuclear accidents


25 Years After: Scenes from Chernobyl--The Worst Nuclear Accident in History [Slide Show]

On the eve of the 25th anniversary of the nuclear disaster at the Chernobyl power plant in Ukraine, Scientific American frequent contributor Charles Q. Choi traveled to the site and snapped these haunting images


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