His work has shown that vaccination programs can be carried out in an economically sustainable way.

The number of subscribers at that point were 5000, which was not economically sustainable.

This is an economically sustainable way to fight against deforestation.

The challenge is to continue to develop this renewable energy source in an environmentally and economically sustainable manner.

Next economics: There is no economically sustainable model for space right now, so it becomes an expensive hobby.

At the level of the District Court, however, the plan was seen as not only legally adequate, but economically sustainable.

At this rate, many experts believe that solar energy is not efficient enough to be economically sustainable given the cost to produce the panels themselves.

They are, therefore, not especially suited to a rapid, reliable and economically sustainable development of air traffic in Europe.

We must ensure that we have economically sustainable development in Europe.

Consequently, I believe that we need to approach the management of the seas' potential from a green and economically sustainable perspective.