Americans think national parks are worth US$92 billion, but we don't fund them accordingly
- Written by Linda J. Bilmes, Daniel Patrick Moynihan Senior Lecturer in Public Policy and Public Finance, Harvard University

One of the quirks of government accounting is that our nation’s most valuable assets – from aircraft carriers to interstate highways – don’t appear on any national balance sheet. In part this is because it is hard to put a value on them. How...