What's the best way to preserve my photos?

I have a tremendous number of photos and negatives from my pre-digital age. They’ve been in photo boxes (some are sticking together) and photo albums (the pages are cementing together) and, yes, they’ve been stored in the garage. I’m sure the heat has been the culprit, but I just don’t know where I can store them inside. I’ve gotten a scanner and I’ve been scanning the highlights, but does anyone have a suggestion for how to best store the bulk of them?