Last month, two friends and I backpacked for a week in the Sierra Nevada. We hiked through meadows dotted with wildflowers, slept beneath snow-draped peaks and met plenty of other hikers: the dad and son whose Green Bay Packers caps sparked a conversation about our mutual ties to Wisconsin; scientists from UC Santa Cruz studying flowers and rock formations; five recent college grads from Kentucky who were hiking the John Muir Trail before they scattered to begin their adult lives.