This week, we've been reporting onthe sharing economy— a term that describes the couch-surfing, car-sharing and community-garden-growing world where so many people are using their existing talents, space or tools.
In the mountain streams of the American West, the trout rules. People don't just catch this fish; they honor it. And spend lots of money pursuing it.
But some western trout may be in trouble. Rivers and streams are getting warmer and there's often less water in them. Scientists suspect a changing climate is threatening this iconic fish.
I joined two such scientists from the U.S. Geological Survey as they drove up a mountain road in Montana, in the northern Rockies, a place dense with stands of Douglas fir and aspen trees and braided with mountain streams.
As technical problems with the government's new health insurance marketplace slow the pace of sign-up, a variety of "fixes" have been proposed. But some of these would create their own challenges. In rough order from least to most disruptive, here are some of the ideas:
1) Fix the website on schedule This is everyone's favorite idea. The Obama administration says it hopes to have HealthCare.gov working smoothly for most users by the end of November, though it's not clear that target will be met.