For centuries, humans have relied upon their imagination to avoid pregnancy.

He suddenly realized how very much humans relied on facial expressions.

While many species engage in social learning, humans consistently rely upon it for behavioural cues and information about the environment.

Information has to be taken in to the brain - often through the eyes but this is only because humans rely so much upon this sense.

But, more important, writing would allow humans to rely too much on these external means of recording.

In "Things," the objects on which humans rely start rebelling against their exploitation.

I know how much you humans rely on such information.

If the humans had relied on ships, they wouldn't have gotten out this far by now and.

He left Kinidrius, planning to teach humans to care for themselves rather than rely on him.

He talks about how humans will rely on themselves from now on.