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For decades, many scientists assumed that if intelligent life existed elsewhere in the universe, we would have seen some sign of it by now. But one NASA astrophysicist believes he may know why it hasn't happened yet, and his so-called “radical mundanity” theory points to a possibility most people probably haven’t even considered.

Europe will introduce new travel rules in 2026, including the ETIAS travel authorization and digital border checks, meaning visitors from visa-free countries must complete a quick online approval before visiting.

Off India’s southeast coast, archaeologists have been mapping a submerged ancient port city near modern Poompuhar, a place long tied to Tamil legend and early seafaring. What they are finding on the seabed looks less like scattered ruins and more like the outline of a working harbor district. The deeper they scan, the more it hints at trade routes that once stitched India to faraway shores.

What is the 183-day tax rule? Learn how living abroad can affect tax residency, dual taxation, and whether you triggered foreign tax obligations.

Some states have a rather clear advantage over others when it comes to making it through an invasion in one piece (or at least in fewer pieces, as the case may be).

For centuries, people have traveled across the world to see Egypt’s pyramids. They’re towering, unmistakable, and instantly recognizable. But did you know the largest pyramid on Earth isn’t actually in Egypt? Most people don’t. In fact, most people who’ve seen it have walked right past it without realizing what they just saw.