Here's another sign the economy is in trouble: the National Debt Clock in Midtown has run out of digits. The United States now officially owes more than 10 trillion dollars and now the clock's owner, the Durst Organization, has now had to make room for a 14th digit. John Del Signore has another idea: "While they're at it, they may as well make room for a 15th and 16th digit, and change the currency to yuan." [Gothamist]