It's little remarked upon, but there's a thriving culture of video gaming among people who can legitimately join AARP, and intergenerational communication may just be the better for it.
You can add this to the list of things that are unhealthy about smoking cigarettes: Not only is nicotine addictive, it can interfere with dozens of cellular interactions in the body.
Policymakers have experimented with of various ways of reducing excess alcohol consumption, but the most effective tool may be the simplest: Use targeted taxes to increase the price.