The This week the evolution of music technology. Take a listen to these two pieces of music

here's the first one. And here's the second. Did you notice a difference?

Did you notice a difference?

Well, believe me there is is one and later in the program

we'll reveal what it is when we examine how technology is evolving the world of music.

Plus the global response to climate change, the mystery of missing starlings and how

delightful really is that red sky at night. I'm Connie Orbach. I'm Chris Smith and

this is the Naked Scientists. The Naked Scientists podcast is powered by UKfast.coDuk.

UK. This week representatives from more than 190 nations have been gathering in Paris to participate in the 21st conference of the parties, COP21, and at the top of the agenda is climate change.

The aim is to pull together a binding political agreement that everyone signs up to and which

will, they say, limit future global temperature increases.

But what are the chances of this actually working?

And what challenges a politician is going to face in trying to implement the sorts of strategies

that will be necessary to keep a lid on climate.

First, I went to speak with Cambridge University's Julian Huppet, who, as well as being a scientist, is also a former

member of Parliament, whose campaign previously on environmental issues.

Well what we have in Paris is the conference of the parties.

All the players around the world, governments, non-governmental organisations coming together to try to work out what the options are

to limit carbon emissions, to try to make sure that we don't see warming of more than two degrees.

It's a slightly arbitrary figure, we know that two degrees is harmful, but it now seems

almost impossible to achieve no change at all.

So two degrees I guess is bad, but not too bad.

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