Plato and Aristotle have differing views on what the soul is and what it is responsible for. In this hub I discuss each philosophers ideas on what the soul is. I also conducted a survey of five people and received their views. Check it out and cast your vote.

2 October 2009 | NEWS OF THE WEEK

Mars Mission Delayed

Russia and China fall short in mad dash to prep probes that would return samples.

2 October 2009 | NEWS OF THE WEEK

Lawmakers Signal Tougher Controls on Pathogen Research

Concern over saftey of labs threatens to slow the booming biodefense industry.

2 October 2009 | SCIENCENOW

Uncovering Butterflies' Past

First butterfly family tree suggests the insects fluttered among dinosaurs.

2 October 2009 | SCIENCENOW

Biosafety Bra, Beer Bottle Ballistics Win Ig Nobels

The opal is a gem of magical beauty; in its depths flash brilliant sparks of constantly changing colors that have entranced and fascinated people for centuries. Considered by many to be the most precious of stones, the opal is also the most fragile, and it’s sensitively to light, atmosphere, and temperature has given it an air of unpredictable that has added to its appeal.

Opals come in many colors and varieties. Of these, the best known are the white, or light colored; the black, or dark colored; the harlequin, or multicolored opal; and the spectacular, reddish tinged fire opal.