Russia’s S-500 air defense system represents Moscow’s most ambitious attempt to neutralize the stealth advantage that American fifth-generation fighters like the F-22 Raptor and F-35 Lightning II ...

Abstract: Metamaterials have been extensively utilized in diverse applications, including invisibility cloaks, superlenses, highly efficient environmental sensors, and others. However, for resonant ...

Strangers used to open doors, help lift my pram and greet me with approval when I looked ‘like a mum’. After one simple haircut, I was treated very differently In November 2000, two weeks after giving ...

I’m standing in the center of Edinburgh’s Royal Mile, surrounded by hordes of tourists making their way to the city’s famed castle at the top of the road. Gift shops with discounts on tweed beckon ...