[Conan the Librarian]

For those who still think Pluto is a full planet, I suggest reading “How I Killed Pluto and Why It had it Coming” by Mike Brown, the guy who started the whole thing. It explains what happened and why Pluto was killed as a Planet.

For me, a Rose by any other name...

[SunkenCiv]

The demotion of Pluto was a political act by a supposedly scientific org, was a gratuitous and unnecessary action, carried out to belittle the US. IMHO of course. I'll stick with David Levy's view:

"To Pluto And Far Beyond" By David H. Levy, Parade, January 15, 2006 -- We don't have a dictionary definition yet that includes all the contingencies. In the wake of the new discovery, however, the International Astronomical Union has set up a group to develop a workable definition of planet. For our part, in consultation with several experienced planetary astronomers, Parade offers this definition: A planet is a body large enough that, when it formed, it condensed under its own gravity to be shaped like a sphere. It orbits a star directly and is not a moon of another planet.

[Angelino97]

For those who still think Pluto is a full planet, I suggest reading “How I Killed Pluto and Why It had it Coming” by Mike Brown,

Dr. Alan Stern wrote a response to that in an article: "“Why Pluto is a Planet, The Embarrassment of the IAU, and Why They Had It Coming”

It's mentioned in a Forbes article about Stern.