High-powered computer sees red

In almost all human cultures, colors are associated with different emotions such as hate, love, anger and sadness.

Cryptography without using secret keys

Most security applications, for instance, access to buildings or digital signatures, use cryptographic keys that must at all costs be kept secret. That also is the weak link: Who will guarantee that the key doesn't get stolen ...

Promotional games at retail stores increase consumer spending

Shoppers who win retail discounts through scratch-off tickets or other games of chance are more likely to make a purchase, and spend more money, than customers offered standard discounts that apply to everyone, according ...

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