She is, as Bush has said, "a pit bull in size 6 shoes." If confirmed, Mires will be the president's woman on the Supreme Court. She would replace Justice Sandra Day O'Connor, a Republican pick for the court who has turned out to be more of a swing voter than some right-wing Republicans would like.

2. What's the deal with duty-free?

(What's the situation with duty-free? Tell me all about it)

For many travelers, duty-free is a luxurious enigma wrapped up in discounted Swiss chocolate and soaked in tax-free vodka. Duty-free goods are mostly sold inside international airport terminals, ferry stations, cruise ports and border stops.

As the name implies, duty-free shops sell products without duty (a.k.a. local import tax). For example, by buying goods in a duty-free shop at Paris's Charles de Gaulle, you avoid paying the duty that France slaps on imported goods (like Swedish vodka) and that French stores ordinarily include as part of a product's list price.

In Europe, there's a bonus perk: Duty-free shops in airports and ports are "tax-free shops," too, which means you are spared the value added tax (or V.A.T., a type of sales tax) that would otherwise be included in the price of goods sold elsewhere in the European Union. That means a savings of between 5 and 25 percent, depending on the country.

3. What's the deal with the 250 mini-earthquakes at Yellowstone?

(What's happening at Yellowstone? Is the super volcano beneath ready to blow?)

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