Why did human scientists every try to keep a head alive?

"I know More about plants than any human scientist ever did."

The question now was how to transfer the captured materials to human scientists for study.

They were about to go where no human scientist had gone before.

Who knows what you might discover, that human scientists have missed?

He was put together by a human mad scientist who is thus his "father."

I knew he was not asking about the ancient human scientist of that name.

We have risked much, in sending the human scientists away.

"I take it the human scientists have all returned home safely?"

Nor do we care, in the way that human scientists might.