NIST's internet time service serves the world

The Internet Time Service operated by the National Institute of Standards and Technology (NIST) serves much of the Earth, with customers from around the globe. In one month of study alone, just two of the 20 NIST servers ...

Fifteen shades of photoreceptor in a butterfly's eye

When researchers studied the eyes of Common Bluebottles, a species of swallowtail butterfly from Australasia, they were in for a surprise. These butterflies have large eyes and use their blue-green iridescent wings for visual ...

US cyber pros test skills in exercise meant to stop attacks

The moment a U.S. official pressed a computer key Tuesday, dozens of security experts who gathered in an underground control room girded themselves for a cyberattack—a drill meant to thwart the kinds of intrusions that ...

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