A correspondent writes: “the Boy Scouts of America — arguably a bedrock conservative organization by just about any possible definition — has some of the deepest environmental roots anywhere, long predating the modern tree hugger movement. The BSA’s simple rule (leave your campsite cleaner than you found it) still represents most of what you need to know about being responsible about the natural world. And as a former Scoutmaster, I can testify that you’d be hard pressed to find a liberal Democrat at a Scout leader training conference.”