1 - Astronomy is very different from other sciences in that it is observational rather than experimental.

2 - Because some universities rely almost entirely on private rather than on public sources of funds, they are independent of government control.

3 - According to a report, social factors -rather than genetics - are to blame for huge variations in ill health and life expectancy around the World.

4 - It has often been said that international law ought to be classified as a branch of ethics rather than of law.

5 - The Babylonians celebrated New Year's Day over four thousand years ago, although their celebration was in March rather than in January, coinciding with the spring planting of crops.