As the summer reading season begins in earnest, a third of Americans say they're reading fewer books for personal enjoyment than they did 10 years ago — a decline that cuts across age and education levels. About half who report reading less say it's because they are too busy and don't have enough free time, and about half also say there are too many distractions competing for their attention. More than a third say their own attention spans have gotten worse over the past 10 years. So what are