The study also ranks companies based on the amount of pollution produced relative to their power output.

A recent study by the center ranked Idaho as the state whose policies were most likely to worsen the economic condition of the poor.

That study ranked Delaware last among states based upon 16 health factors and related behavior.

The study ranked countries in terms of disparity on the income scale.

The study also ranked the 50 states and the District of Columbia according to their efforts in child welfare.

The study ranks countries on the rights and freedoms they offer women.

Once again, the study ranks Connecticut among the 10 most segregated states.

This study would still not rank him as a heavy user because he'd only had a contract for a few years.

One study ranked the area fourth highest in gun safety, out of 100.

A 2011 study ranked it among six elite finance journals.