Scientists are unraveling the mystery of the arrow of time

The flow of time from the past to the future is a central feature of how we experience the world. But precisely how this phenomenon, known as the arrow of time, arises from the microscopic interactions among particles and ...

Female monkeys with female friends live longer

Female white-faced capuchin monkeys living in the tropical dry forests of northwestern Costa Rica may have figured out the secret to a longer life—having fellow females as friends.

Sensor could help patients stay on top of their meds

Lithium can alleviate the symptoms of bipolar disorder and depression—if taken in just the right amount. Too little won't work, while too much can bring on dangerous side effects. To precisely monitor the amount of this ...

Rare African script offers clues to the evolution of writing

The world's very first invention of writing took place over 5000 years ago in the Middle East, before it was reinvented in China and Central America. Today, almost all human activities—from education to political systems ...

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