Centrust has been criticized for its aggressive investments outside traditional industry practices.

Some experts estimate that China could cut its need for new power plants in half with aggressive investments in efficiency.

Yet the authors' support for more aggressive investment in education and physical infrastructure is weak tea.

But economists regard the aggressive foreign investment in hotels, offices and apartment buildings as a clear sign of health for the regional economy.

Making the switch to more aggressive investments was not easy, though.

The fact is, we need aggressive investment in new motor vehicle fuels.

Groups of scientists and engineers have called for far more aggressive investments in research on new technologies that could generate energy without emissions.

I hope that we are now all agreed on more aggressive investment.

But what makes one investment more "aggressive" than another?

While it remained a publishing company, early and aggressive investment in electronic delivery had become a key company goal.