- What is it?
It's a kind of pollution caused by a radioactive source.
- Why does it happen?
The tsunami destroyed the control system of Fukushima nuclear power plant, that became uncontrollable, and meltdown occurred as a result. After that radioactive elements spread around that area.
The tsunami was induced by a tremendous earth quake happening at the North of Japan.
- Why is it bad?
Radioactive source will increase a probability of cancer and/or leukemia. It also increases a probability of genetic damage. Some kinds of radioactive elements take a long time to decay (half-life is very long) and the effect remains for a long time.
- How to solve the problem?
It's difficult to solve the problem easily because there is no way to remove the radioactive effect completely without waiting for the radioactive element to naturally decay. So far now, public and private organizations measure the product which is contaminated with radioactivity or not. The easiest way to stop such disasters any more is to stop using nuclear power plant, but it's not realistic. That is because Japan suffers from these problem.
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