Final answer:
The Fu`kushima Daiichi Nuclear Power Plant in Japan experienced a meltdown of reactors due to a tsunami.
Step-by-step explanation:
The Fu`kushima Daiichi Nuclear Power Plant in Japan experienced a meltdown of reactors due to a tsunami. The reactors were shut down automatically following a 9.0-magnitude earthquake, but the tsunami caused the emergency generators to fail, cutting off power to the coolant systems. T
his led to the meltdown of the reactors and the release of radioactive material.