Actual title is “Volcanoes! Lightning! And Radioactive Gas, Too”. It becomes ungrammatical if you remove the exclamation points. If you feel you have to change it, I'd recommend “Volcanoes, Lightning, And Radioactive Gas, Too”.
I didn’t remove the punctuation or change the capitalization. I assume mods did it for... reasons?
Recently 'dang introduced some code to normalize submission titles: this may be a result of that. You can email the mods directly via the Contact link in the footer to ask for details or request a change.
It’s OK, if the post had gone anywhere I would. Either way it’s good to know what happened, thanks.