The issues, they said, involve economy, water, solid-waste disposal, transportation, energy and housing.

So it in a quantity that involves energy and time.

However, the definition involving energy can be readily extended to yield information about the stability of the equilibrium state.

One could run, ride horses or fall dangerously in love, but all of this involves energy.

Thermoeconomists argue that economic systems always involve matter, energy, entropy, and information.

Taking the measure of a school involves time and energy, but not much more of either than most parents spend buying a car or a home.

For the next three months they'd be deep into a project that should totally involve all their time and energy.

The next three problems involve ceilings-on energy, freshwater, and photosynthetic capacity.

I welcome the willingness to support the use of aid to promote common-interest projects, particularly those involving renewable energy.

This does not really involve kinetic energy, but acceleration due to unequal forces.