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:
Jesus and “God” - Part 8 - Some recent Jewish scholars on the biblical Shema
David Kelley on How to Evaluate Definitions
podcast 354 – Dr. Steven Nemes on Trinity theories - Part 1
podcast 131 - 10 Apologists' Mistakes about the Trinity - Part 1
more on despising analytic theologians
Ye Olde smug "denier" dismissal
podcast 23 - report from the second annual Los Angeles Theology Conference
Flocanrib - a parable
Do Christians worship three Gods?
God the baby – Rama / Ram, avatar of Vishnu - Reloaded