We usually don't have this kind of thermal activity when it's not associated with rain.

So far, no evidence of active volcanic or thermal activity has been found on the planet, he noted.

The origins of thermal activity are said to date back to the Middle Ages.

You can see indications of thermal activity on the situation board already.

Often called "the green town", this town enjoys thermal activity and quite a few greenhouses have been built here.

His reports of thermal activity in the Yellowstone area were considered at the time to be fictional.

But the ship's thermal and electrical activity is minimal.

The summit now contains a small crater lake where weak thermal activity continues.

Unfortunately as the flight test took place in December there was little thermal activity around.

The field is listed as an active volcano based on its thermal activity.