Pearls melt in vinegar.

Putting away $25 a week for 40 years and earning 7% interest would produce a nest egg of over $286,000. According to a recent survey by Primerica, only a third of Americans realized it would be at least $150,000.

There are four grams in a teaspoon of sugar. A can of soda has about 40 grams of sugar – or 10 teaspoons.

In research carried out at Princeton’s NEC research institute, physicists have shown that light pulses can be accelerated to up to 300 times their normal velocity of 186,000 miles per second.

It takes about a month for the University of Texas at Austin to activate a student’s e-mail address.

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