The Why Files on MSN

They used sound to lift stones - was this the secret to the pyramids?

Ancient civilizations moved stones weighing hundreds of tons without cranes, pulleys, or modern machines. One theory? They used sound. And shockingly, science now shows acoustic levitation is real — ...
Ancient Origins

Hidden Geometry in Khufu’s Subterranean Chamber: What Was Its True Significance?

It is well-known that Pythagoras’ ancient Greek equation for right triangles: a2+ b2= c2 , is older than ancient Greece. We also know that in Khufu’s pyramid the height equals the radius of a circle ...

Jordan in Egypt: ‘Full of wonders, rich in culture and full of heart’ – why it needs our support now

Jordan is something of an oasis in a region riddled with conflict, with Attitude's travel editor discovering Petra, the Dead ...
IEEE

MIMO-Based Chirp Spread Spectrum With Permutation Matrix Modulation

Abstract: In this article, we propose a multiple-input-multiple-output (MIMO) configuration for chirp spread spectrum (CSS) modulation integrated with the permutation matrix modulation (PMM) scheme, ...
PetHelpful on MSN

Dogs Climbing the Mayan Pyramid at Chichén Itzá Ruins Leaves Tourists in Awe

The Mayan ruins of Chichen Itza are a popular destination for travelers in Mexico, though no tourists are actually allowed on ...

I hiked into Arizona's Grand Canyon—here's what it was like

With backcountry camping, river swims and endless solitude, the multi-day Escalante hiking route offers deep insight into the ...