What’s the deal with Superman Blue and Superman Red?

On February 10th, 2015, /u/dispenserhere asked the following on /r/DCcomics:

Hi, I’ve just started reading JLA. I’m up to around no 15 but I’m still completely clueless what’s going on with Superman. Why is all different and blue? No-one else seems to be mentioning it.

I’m guessing it’s something going on in his comics, but I can’t find anything on it.

Yo listen up here’s a story about a Superman that lives in a blue world… ahem sorry. Anyway, here are the events that lead Superman to saying “I’m blue!” (DA BA DE DA BA DI… sorry again! That song’s just too darn catchy). Here we go:

What’s the deal with the Anti-Monitor?

On January 19th, 2015, /u/Cyber85 asked the following on /r/DCcomics:

Can someone explain who the ant monitor is? I keep seeing that name pop around when I read comics.

The Ant!

Oh man – I love that people are asking about the Ant! He was a villain of the Teen Titans back in 1966! He was a thief so I guess he had to monitor stuff and…

Oh, you meant the Anti-monitor. Well, he’s (it’s?) cool too. Here’s what you need to know. :)

What’s up with Earth-D?

On October 15th, 2014, /u/switchfade asked the following on /r/DCcomics:

Can someone help me? I’m trying to read about earth D! I found the concept amazing but I have no idea how to find out more

DC history nerd here! I think I can probably help :)

First we need to go way way back to the 60’s. The decision to explain how the the 1940’s Flash (Jay Garrick, the guy with the metal hat) and the new Flash (Barry Allen) could both exist was to say they existed on parrallel Earths, and the two finally met in the seminal story Flash of Two Worlds (1961). This lead to the establishment of Earth-One, where the modern characters lived, and Earth-Two, where Jay Garrick and the Justice Society hung out. The JLA and the JSA the had annual adventures where they’d team up for, basically, the next two decades.