I recently found an interesting article on stress in bee hives which, although written for the USDA, echos some of the ideals and philosophies of the group.
A few relevant quotations:-
"As beekeepers, we assume that the white boxes we provide as hives are somehow adequate if not better than natural cavities. We find it difficult to understand why, given our breeding and management strategies, our bees are often unable to withstand the onslaughts of weather, diseases, mites and perhaps even the incursion of Africanized bees. The fact is that from the very moment we place bees in artificial wooden hives, we impose upon them a large measure of stress."
Highly recommended, well worth the read.