Network
A chain of communication that connects places.
Distance Decay
The farther way someone is from another, the less likely the two are to interact.
Space-time compression
The reduction in the time it takes for something to reach another place.
Resource
A substance in the environment that is useful to people.
Sustainability
The use of Earth’s resources in ways that ensure their availability in the future.
Renewable resource
Produced in nature more rapidly than it is consumed by humans
Nonrenewable resource
Produced in nature more slowly than it is consumed by humans