The crisis at the Fukushima nuclear power plant is still a long way from being over. With high levels of radiation still escaping from the damaged reactors, we sat down with Professor Wim Turkenburg and asked him some of the questions we've been hearing from our supporters. Professor Turkenburg is an atomic and molecular physicist, and head of the department of Science, Technology and Society at the Utrecht University in the Netherlands.

If you don't find the answer you're looking for here, try our extensive Q and A briefing, or our briefing on radiation safety/effects.  There's also another video Q and with our nuclear expert Jan Beránek. As always, we'll keep adding updates to our main Fukushima page, and Twitter account.

Here's what Professor Turkenburg had to say:

Introducing Professor Wim Turkenburg

What is the present situation at Fukushima?

Did you say 'a meltdown'?

What's the biggest danger?

What's the danger to marine life?

Are there cracks in the Fukushima reactors?

Has TEPCO got it wrong?

What are the problems with the spent reactor fuel?

What is the best case scenario?

How long will the consequences of Fukushima last?

What is the worst case scenario?

How much radiation has escaped from Fukushima?

Could Fukushima be sealed in a sarcophagus like Chernobyl?