This is the Guardian.

Hear that?

Well, according to scientists, that definitively proves you are not a hedgehog.

The revelation that these sweet, spiky creatures pick up sounds well into the ultrasonic range

opens up the possibility of better understanding hedgehog communication

and how we can make use of it to slow

or reverse their drastic declines. As well as exploring new ways to converse with the hedgehogs,

researchers have been investigating one of the new ways we converse with each other, with the

aid of AI autocomplete.

It's certainly changing how we write, but could it also change how we think?

A much more low-tech and simple approach for positively influencing the mind is exercise. And scientists this week have

been probing the possible reasons why working out appears to be good for our body and brain.

So today I sit down with my co-host and science editor Ian Sampal to discuss the stories

you need to know about this week.

From The Guardian, I'm Madeleine Finley and this is Science Weekly.

Ian, our first story today is about the link between exercise and the brain.

There is a fair bit of research that links exercise and brain function,

but the mechanisms behind all of it are still quite murky.

So what has this group at UCL done to try and clear this up?

You're right. There's been an awful lot of work looking at exercise and brain function.

And I would say a lot of that research has had pretty mixed results.

What this group at UCL was doing was they wanted to look at exercise and brain function.

...