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The Grand Place in downtown Brussels can be a feast for the senses: the wafting scent of hot waffles, shop windows chock-full of chocolate, exquisite Baroque architecture.

But that's not all you'll find on the quaint cobblestone streets as the city that serves as both the capital of Belgium and the headquarters of the European Union. There's also puke, dog poop, trash, spit, drug addicts, drunks and brawls.

Hi! I'm back again. I'm a former banker, now a writer at Dealbreaker and an answerer of real and imagined questions about the financial world here. You can send questions to planetmoney@npr.org with "ask a banker" in the subject line, or ask on Twitter (@planetmoney).

Talk about a tease! Our friend Joe Palca reported some pretty big news today on Morning Edition.

The scientists working on the Mars Curiosity rover mission have found something "earthshaking," some data that is going "be one for the history books."

But John Grotzinger, the principal investigator for the rover mission, stopped there. He'll say nothing more until the rover conducts more tests to prove this wasn't a fluke.

You've got questions about the health law? The Obama administration has some answers. Finally.

Now that the Supreme Court has found the Affordable Care Act constitutional and the president's re-election made clear that big chunks of the law will take effect Jan. 1, 2014, the administration is finally releasing rules of the road that states and insurance companies have been clamoring for.

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NEAL CONAN, HOST:

It's Tuesday and time to read from your comments. Last Wednesday, we discussed the dangers and benefits of high school football. Walt in Bakersfield, California wrote to say: I learned teamwork, perseverance and sacrifice of personal goals for larger good through football. At work, the word coachability is applied to people who will listen with humility and attentiveness. Other sports are more individualistically oriented. Please, consider these losses before you drop football.

At 86, legendary singer Tony Bennett says he's at the top of his game and more passionate than ever about his art.

"I want to try to prove that at 100, I could sing as well as I was singing when I was 45 or 43," he tells NPR's Neal Conan. "I'd like to prove that if you take care of yourself, you can actually not regret the fact that you've become an old-timer, but you can just still improve and actually get better."

French adventurer-scientist Roland Bourdeix has a grand, almost surreal, vision for how to preserve a thousand or more genetic varieties of coconut trees. Imagine, as he does, turning dozens or hundreds of remote Pacific islands into coconut sanctuaries. Each island would contain just a few varieties of these trees. No others would be allowed, because the whole point of this exercise is to prevent uncontrolled mixing of genes from different varieties.