Bone China and Low Humidity = Brittle?

I have several Lennox statues made of bone china that I bought when I lived in New York. I moved to Nevada 11 years ago, and I just broke a couple of pieces with the slightest touch while dusting. Does an arid climate cause bone china to become brittle, and if so, is there anything I can do to treat them to be less brittle?

Answers:
It might be the altitude and the temperature. Also might be that you were more rough with them than you feel when they got busted up. Review your actions when you cracked or broke them. Sometimes its just fate or just the weakest link and it happens. No law of physics here that I know of. Just brittle and got thumped in the wrong spot.

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