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Mating laser-driven atomic clocks like the one shown here with microwaves promises more accurate electronic devices. N. Phillips/NIST

Pairing lasers with microwaves makes mind-bogglingly accurate electronic clocks – a potential boon for GPS, cell phones and radar

Researchers have made some of the most accurate clocks imaginable in recent years, but the trick is harnessing those clocks to electronics. Using lasers to tune microwaves bridges the gap.
Some people fear we’re interacting more with our phones at the expense of our loved ones. Ana Blazic Pavlovic/Shutterstock.com

How to tell if your digital addiction is ruining your life

While there are negative impacts, many of the risks of too much screen time are overblown. A scholar who has studied the topic for years offers some tips for finding the right balance.

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