What have you been doing with your free time this summer? Maybe you've been heading out of work early on Fridays to hit the beach or enjoying the weather at an outdoor bar or restaurant. Not Michael Bloomberg! He's been busy brushing up on his Spanish—he's been taking lessons for six years now—and made time for four lessons last week alone. This is totally going to come in handy the next time he hangs out with Shakira. [NYT]