For loft storage, I wonder if it is better to store lego in (thick) cardboard boxes or plastic storage boxes? Plastic boxes in the winter would keep out moisture but plastic boxes in the summer just seem to retain more heat than a cardboard box and can pass on a smell to the bricks.
Just to clarify (and maybe I should buy Gerhards guide) will bricks go yellow from heat or is the yellow only from UV light?
P.S. Its a really hot day today here in England.