Imagine sweeping through green fields, floating five feet above ground, sun on your face as you slide by on track to your destination.

Not a care in the world as you simply lean back, and before you know it, you're there.

London to Manchester from just 32 pounds each way.

Avanti West Coast.

Feel good travel.

Exclusions and limitations apply.

Full terms and conditions can be found at avantiwestcoastcoast.com.

UK forward slash plan.

In an experiment, I don't know yet.

Why is Blight so far?

Like, it sounds so simple.

They had no idea.

But now the data's...

I find this not only refreshing, but at some level astounding.

Nature.

Nature. Welcome to a very special episode of the Nature podcast.

It is in fact our 500th show, and that's not even including all the backchats, nature

futures and other podcast extras.

To celebrate our half-millanium, we bring you, as ever, three stories looking at the latest and greatest research.

Floating cities, malaria-free mosquitoes, and using evolution to inspire aircraft design.

Plus, we have a wrap-up of this year's no bells in the news chat.

But that's not all, we also have a head-scratchingly hard quiz and a very special guest whose voice

...