I like NPR, but what I like about them is usually that they ask a question and get out of the way so the expert can talk. That means that you hear what the expert wants to say on the topic, which is great. But the expert doesn't get to choose the topic, and unless they're particularly assertive, the expert usually doesn't tell us when the question isn't really relevant, or when a better question could be asked. They're great, and I agree about donating to NPR, but I think journalists who were actually experts in the fields they reported on would be able to do better.