Not sure what it’s doing on LiveScience.com, but it’s a decent article.
We covered this in more theological detail some time back.
Update: and there is now an episode of the trinities podcast devoted to the theological significance of the Council of Nicea in 325.
Related posts:
podcast 86 - Kermit Zarley on distinguishing Jesus and God
podcast 130 – Ehrman and Bird on How Jesus Became God – Part 3
banning the word "trinitarian"
Arius and Athanasius, part 8 - Athanasius on begetting the Son (JT)
podcast 11 – Tertullian the unitarian
Parsing Plantinga: is there such a person as God?
podcast 292 - New vs. Old "Beginning" - Two Interpretations of John 1
More on Mysteries
Pruss on Latin Trinitarian Perfect Being Theology
William Lane Craig in the Chronicle of Higher Education