Because humans depend on mother earth for everything, in order to survive, recycling has to be done or else we're basically destroying our own lives.

The results suggest that humans depend more on eye movements than head movements when trying to follow the gaze of another.

Like the powerful and versatile tigers, humans depend on a whole complex web of life to sustain us.

Selection pressures associated with prior niches tend to become relaxed as humans depend increasingly on novel environments created continuously by their own productive activities.

If the technique had worked, it could have been adapted to all the plants and animals that the humans of Lusitania depended on for food.

They provide the raw materials for shelter, clothing, medicines, fuels and countless other products on which humans depend.

Because early humans depended on the ability of a few young males to run fast and effectually wield projectiles.

The random attacks are designed to look like sporadic malfunctions of devices that humans depend on for their everyday routines.

The rapid increase in human numbers, especially in the third world, is destroying the habitats on which birds and animals - and humans -depend.

Mencius observed that humans depend on one more important mental function.