An extreme environment is one place where humans generally do not live or could die there.

Within a week all humans would die, Cartright had said.

They didn't need to be told what that meant: their humans would die.

The humans who obsessed him would die, but only after everything they loved had died before them.

It is estimated that during the 20th century between 167 and 188 million humans died because of war.

She had not even been sure humans could die.

Both the others winced; over half a million humans had died in the attack.

"That's a long way of saying humans get old and die."

We all saw so much blood when the humans died, and some of us never really got over the trauma.

But there were also differences, the most important of which was that no real humans died.