In a sign that the economic sanctions imposed by the U.S. and those announced by the European Union are squeezing Iran, the chief of Iran's judiciary warned that major currency speculators could face the death penalty.

The AP quotes Ayatollah Sadegh Amoli Larijani as saying that "depending on the importance of their crimes, some of the economic corrupted can face execution."

Three years ago, venture capitalists were pouring billions of dollars into technologies like solar power, wind power, biofuels and fuel cells. The federal government followed, directing some $44.5 billion into clean technology from late 2009 to late 2011 through loans, subsidies and tax incentives.

But now the clean-tech industry is facing leaner times, in part because of cheaper natural gas prices, the effects of the financial crisis and China's growing solar industry.

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MICHEL MARTIN, HOST:

We're going to head now from the site of the Super Bowl to some of the world's biggest websites. Big changes are in store at Google and Facebook.

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MICHEL MARTIN, HOST:

I'm Michel Martin and this is TELL ME MORE from NPR News. Coming up, there are changes in Google's privacy policy and they are causing a stir. We'll talk about that and we'll also talk about Facebook's new stock offering. That's coming up in a few minutes.

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MICHEL MARTIN, HOST:

I'm Michel Martin, and this is TELL ME MORE, from NPR News.

Coming up, millions of eyes will be on Indianapolis this weekend as it hosts the Super Bowl for the first time. We'll check in with the city's mayor to see how the preparations are going for the big game.

As the never-shy Donald Trump prepares for what he says will be "a major announcement ... pertaining to the presidential race" at 3:30 p.m. ET in Las Vegas, there's word from CNN that its sources say the Donald will endorse Mitt Romney's bid for the Republican presidential nomination.

Those northern Europeans are serious about their butter; many countries typically leave in more fat than we do in the U.S. Some would argue that makes for a better product.

But butter, and all that fat in it, is turning into enemy No. 1 in the fight against obesity. Denmark, for one, has become the first country in the world to tax butter and other sources of saturated fat.

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