Farshad Rezakhanloo

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According to new research, happiness peaks when couples have sex once a week but does not increase with greater frequency – and quality matters<p>Sex matters to couples until it doesn’t, according to new research that finds happiness peaks when couples have sex once a week but does not increase with …

Sexual Health

Samsung’s foldable ‘Project Valley’ smartphone leaks, hints at January unveiling

While this isn’t the first we’re hearing about Samsung’s elusive and top-secret foldable smartphone project, code-named “Project Valley,” a new leak surfaced Tuesday on Chinese microblogging site Weibo purporting to show the device.<p>We first caught wind that Samsung may be working on the odd …

Bugatti's Gran Turismo concept is real, and totally absurd

Gallery: Bugatti's Gran Turismo concept is real, and totally absurd<p>Gallery: Bugatti's Gran Turismo concept is real, and totally absurd<p>+ 5<p>+ 4<p>+ …

This tiny £20 box has transformed the way I listen to music

I purchased a FiiO e05, which is a cheap, £20.99 headphone amplifier, on Amazon to see if it would make any difference to how I enjoy music.<p>What you may not know is that every smartphone and laptop has an amp in it already. In fact, you probably own several headphone amplifiers without realising it.<p>…

Photograph: Nasa/Rex Shutterstock<p>This image of Pluto is derived from data sent back from Nasa’s New Horizons spacecraft. The image is dominated by the informally named icy plain Sputnik Planum but also features a tremendous variety of other …

Solar System

How It Works: Death By Black Hole

A quantum quandary<p>As you fall feet first across an event horizon—the point where nothing can escape the black hole’s gravitational pull—you don’t feel anything change. But eventually, gravity is so much stronger at your feet than your head that you’re stretched apart, like Play-Doh, until you snap. …