High above thunderclouds, where Earth’s atmosphere transitions into space, some strange and fleeting flashes of red light can sometimes be spotted in silence. But what are these? Alien signals or some ...

For nearly a century, pilots have reported seeing mysterious red flashes above thunderstorms, initially dismissed as myths. These elusive phenomena, known as red sprites, are now captured by ...

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The top of two green cans of soda can be seen sitting in crushed ice - Eaq/Getty Images If you were asked what the difference is between Sprite and 7UP, you'd hesitate, right? At first glance (or, sip ...