kelric, you admit to not being a Catholic and having little understanding of what the Church teaches, so I'll go easy on you for this.
"Being rich" is now a sin? I'm not a religious person, but I'd always thought that what one does with one's power was more important than having power. Abuse of great wealth? Willful ignorance of the plights of others who have less? Greed? (oh, wait, that one's been around a while, hasn't it?) Sure, I can see that. But simply being wealthy?
No simply being wealthy is not a sin. As the list clearly states, it's being "obscenely wealthy" that is. And that arises out of numerous circumstances.
(Isn't the Catholic church pretty wealthy itself?)
Not as much as many people try to make it out to be. In any case, much of its wealth is spent on numerous endeavors.
Polluting the environment?
Yes that stems from the basic Christian understanding of man being given stewardship over nature.
Who's going to tell the peasant who's lived in squalor all of his life that the new coal-burning plant's electricity heating his home is a bad thing, worthy of being sent to hell?
That's not at all what the Church teaches. If a man has to choose between feeding his family and working in a place of sin, then the issue is upon those who choose to employ people in such sinful circumstances, putting them in that situation.
Social injustice has its heart in the right place, but it's pretty vague, too.
There's a whole area of Catholic doctrine that sets out to identify and define social justice and injustice. It's called Social Doctrine.
As en ex-geneticist I've got a pretty big beef with the "genetic engineering" one. There are certainly issues that need to be considered, but a black and white "genetic engineering will send you to hell" isn't the way to address it (just tell the folks who take bacterially generated human insulin daily, not to mention other medical treatments, that they'd be better off without it).
Again, you're dealing with a strawman here. Let's take stem cells as an obvious example. So much is made about the Church's opposition to
embryonic stem cell research; yet you hardly ever hear that the Church actually supports the use of
adult stem cells.