This is a podcast from the children's radio station Fun Kids. Listen on DAB digital radio across the UK or online at FunKidsLive.com.

Hello, Merry Christmas and a happy new year. That's of course if we make it there on time because first we need to take a quick trip around the universe with this week's Fun Kids Science

Weekly. This is where we take a deep, tasty look at some of the most weird, amazing and

deadly things that exist. We get all the breaking science news and then we get back on Earth

faster than Santa can swallow some cookies and milk and maybe a mince pie or two. Now this week we're

learning about the T-Rex of the oceans.

Also, we'll hear how plans to build a supersonic car have been saved,

and we'll chat to a genetics expert about what makes you, you,

about what makes you only just different from me

and only slightly different from a gorilla.

That's on the way. Also, I've got

some shoutouts to do after we find out how Santa really does travel so fast. Santa Mori's

Science of Christmas. Hello, Santa Mori here. You know, the one in charge of all the science

and technology here at the North Pole. Now, did you know that there's nearly 7 billion people in the world?

That's a lot of homes to visit and Santa hasn't much time. He starts at sundown on Christmas Eve in Australia and has to finish just before dawn on Christmas morning in Alaska.

That's just 36 hours to play with.

Now whilst in the countryside, each home may be a few miles apart,

luckily in the city's homes are a little closer together, sometimes only a few feet apart.

That certainly helps.

Santa has to travel 10 million kilometres in those 36 hours.

If all he had to do was travel from house to house in this time, you would need to move at an average speed of 77 kilometres per second.

That's 3,000 times the speed of sound!

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