One magazine that's been around since at least 1978 is the "Mathematical Intelligencer", published by Springer, which has good articles that more or less assume a decent math background but manage to be almost universally readable. All of them are written by actual mathematicians, though there are also articles about math history or culture that may be written by other experts. It's rarely seen on magazine racks, but can be ordered directly from the publisher. But I would very much like to start a new math publication that runs articles on math, and on philosophy of physics and of math. —Dan -----
Is there *any* popular science publication that has good math articles?
Excellent opportunity to fill the niche: there's no competition. So, what is the audience that should be targeted? What kind of articles will this audience read? What do they need? What are their interests? Why should they read this hypothetical publication? -----