Lost in the hand-wringing over whether, when, and how quickly the Federal Reserve will raise interest rates, something very interesting is happening in the rest of the world.

In many countries in Europe—including, for the first time, Germany—interest rates have gone negative.

One of the coolest talks I’ve ever seen at a conference was by a professional pickpocket named Apollo Robbins. (You can see his TED talk here.) Watching someone steal wallets, watches, and even glasses from people—on stage, in full view of everyone, and after warning the victim what was about to happen—redefined my idea of how our perceptions work.

Over the weekend, we saw one of the major risk factors in the world take a step back from the brink. Greece and Germany essentially agreed to disagree for the next couple of months, giving the Greeks enough rope to either weave a ladder down (the Greek version) or hang themselves (the German version).

All eyes (at least in the economics world) are on Janet Yellen today as she sits down to update Congress on what the Federal Reserve is doing.

What will she say? When are rates going up?

I’ve maintained for some time that the U.S. labor market is doing very well. Although it's too soon to call it a "boom," that isn’t out of the question given job-creation levels unseen since the mid-1990s and a drop in the unemployment rate back to normal levels.

I wrote yesterday about gaps opening up in the stock market, and how the tech space in particular is starting to look a lot like a bubble.

Among other things, I mentioned that the stock market isn’t in a bubble yet because companies are making money. Later in the day, though, I saw a story pointing out that 71 percent of companies that went public last year were unprofitable, the highest level since 2000 (when 80 percent weren't making money).

A headline on CNBC yesterday morning caught my eye: “Nasdaq back to bubble highs.” What it meant, of course, was that the Nasdaq stock index is approaching the levels of 2000. What it said, or at least what I read, was that the tech market is back in a bubble.

I have to admit, I probably interpreted it that way because that’s what I have been thinking for some time.

As I’ve noted over the past couple of days, Europe is back in the headlines. The confrontation between Greece and Germany has once again captured the world’s attention with the real prospect that the eurozone could break down.

I’m writing this in response to a comment on an earlier post about Europe, which essentially asked: Where does the U.S. fit in all this? A good question, and one that demands a further look.

Right now, the U.S. is in the process of trying to bang heads together to get a settlement between Greece (and the rest of the Southern European countries) and Germany (and the rest of the Northern European countries).

In case you missed it, I was in studio for Fox Business's Opening Bell with Maria Bartiromo on Thursday, February 12. We covered a lot of ground, including retail sales and employment, developments in the EU with Greece, and the U.S. markets.