On the 11th of March this year, an earthquake measuring 9.0 on the Richter scale occurred off the coast of Tohoku, Japan. It was the largest recorded earthquake to hit Japan and in the top 5 anywhere in the world since 1900.

It, and the tsunami that followed, killed more than 15,000 people. And it caused the gravest nuclear accident since the Chernobyl disaster, at the Fukushima Daiichi nuclear power plant.

We did a show about it days after the event to try to piece together a coherent picture of what was going on — and what it meant — from what little information was coming out of Japan at the time.

That was FIVE MONTHS ago. But despite the fact that the crisis has inevitably slipped off the front pages, the crisis continues.

Just yesterday it was reported hot spots of radiation at the plant above dial of the instruments used to measure it — 10 SIEVERTS AN HOUR — enough to kill a person instantly.

So tonight we’re revisiting the topic with Nature’s senior news reporter, Geoff Brumfiel, who has stuck with the story longer, and gone deeper, than anyone in the business.

For the fact sheet mentioned in the show, click here.