Entering the exclusion zone around the crippled Fukushima nuclear power plant is an unnerving experience.
It is, strictly speaking, also illegal. It is an old cliché to say that radiation is invisible. But without a Geiger counter, it would be easy to forget that this is now one of the most contaminated places on Earth.
The small village of Tatsuno lies in a valley 15km (9.3 miles) from the plant. In the sunlight, the trees on the hillsides are a riot of yellow and gold. But then I realise the fields were once neat rice paddies. Now the grass and weeds tower over me.
On the village main street, the silence is deafening - not a person, car, bike or dog. At one house, washing still flaps in the breeze. And all around me, invisible, in the soil, on the trees, the radiation lingers.
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