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Hello and welcome to Six Minute English, I'm Alice.
And I'm Neil.
So Alice, what's your ideal place to be?
Oh, curled up on the sofa with a good book in front of a log fire.
Last night it was very cold.
Well, for me, lying in a hammock under a palm tree on a tropical beach with a cool breeze.
I don't like it when it's too hot.
Hmm, yes, true.
Humans don't cope well with extremes of temperature, but some species do.
The subject of today's show is extremophiles.
These are microorganisms that have adapted to live in what we would consider to be extreme conditions.
For example, living in near-boiling acidic water or frozen at the bottom of an Antarctic lake.
Hmm, those do sound like pretty extreme conditions.
Yes, the thing is, what sounds hostile or unfriendly to us are perfect environments for extremophiles.
And in fact, they wouldn't survive without them.
Now, are you tough enough to face up to today's quiz question, Neil?
Oh, I think so.
All right, then here goes, which US National Park is home to geezers or hot springs that shoot hot water and steam into the air,