Mahdi Arya

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Why Time Slows Down When We’re Afraid, Speeds Up as We Age, and Gets Warped on Vacation

Given my soft spot for famous diaries, it should come as no surprise that I keep one myself. Perhaps the greatest gift of the practice has been the daily habit of reading what I had written on that day a year earlier; not only is it a remarkable tool of introspection and self-awareness, but it also …

Watch This Charger Fully Juice A Smartphone In 30 Seconds

The power of quantum dots<p>I still remember flipping through paper magazines while waiting for webpages to load on my family's PC, in the 1990s. Maybe one day waiting for your phone to charge will seem as antiquated.<p>An Israeli startup recently demonstrated a prototype charger that fully charges a …

Wall Street

The Most Immersive Virtual-Reality System Yet

In your face!<p>Palmer Luckey built his first virtual-reality (VR) headset for a simple reason: Every attempt he'd seen, including his own collection of 46 pairs of goggles, failed in one way or another—too heavy, too slow, too limited a field of view. So he set out to invent the perfect pair himself. …

Work begins on the world's first 3D-printed house

Treacle-black plastic oozes from a nozzle at the bottom of a small tower in Amsterdam, depositing layer upon layer of glistening black worms in an orderly grid. With a knot of pipes and wires rising up to a big hopper, it looks like a high-tech liquorice production line. But this could be the …