The Hello, welcome to the naked scientists with me Chris Smith and with Hannah Crichlow.

This week as the floodwaters are finally draining away across Britain, we take a look at the water management strategies

which could help us to tackle the 3.5 billion pound cost of flooding across Europe every year.

Plus in the news, the schoolboy who became the youngest person ever to achieve nuclear fusion

and a new gene therapy breakthrough for treating HIV.

The Naked Scientists Podcast is powered by UKfast.co.uk. UK.

And before we kick off the news, this week's scientific teaser for you, as we're talking about

flooding this week and climate change, if the North Pole melts owing to climate change,

how much do you think it will cause sea level around the world to rise?

What do you think the answer is have a guess? You can get... level around the world to rise?

What do you think the answer is have a guess?

You can get in touch with us by tweeting at naked scientists or you can email Chris

at the naked scientist.com.

Now this week a 13 year old British schoolboy has become the world's youngest person to carry out nuclear

fusion in his classroom, no less.

Jamie Edwards is a pupil at Penworth and Priory Academy in Lancashire.

So what I've done is I've recreated a process on Earth that happens on the Sun on a daily basis.

So nuclear fusion, the process of smashing two hydrogen atoms together and making helium.

What I do? I have this vacuum chamber and all the air is pumped out of there by two vacuum pumps.

Then I add a tiny bit of juturium gas, heavy hydrogen

into the chamber.

Then I apply about 30,000 volts via an electrode into the center of this chamber.

...