At first, Eva Christiansen barely noticed the number. Her bank called to say that Ms. Christiansen, a 36-year-old entrepreneur here, had been approved for a small business loan. She whooped. She danced. A friend took pictures. “I think I was so happy I got the loan, I didn’t hear everything he said,” she recalled. And then she was told again about her interest rate. It was -0.0172 percent — less than zero. While there would be fees to pay, the bank would also pay interest to her. It was just a little over $1 a month. But still. These are strange times for European borrowers, as if a wormhole has opened up to a ... (full story)