Can tennis balls really hover a human? This video uses basic momentum principles to analyze the idea, breaking down forces, mass flow, and reaction momentum to see what physics actually allows. A ...

The United States has inverted the food pyramid with latest dietary guidelines for Americans to eat "real food" instead of ...

The change could make it easier to repeal limits on [fine particulate matter and ozone] from coal-burning power plants, oil ...

For 5,000 years scholars, generals, and mystics have been fascinated by the Egyptian pyramids. That obsession persists in the modern age. Today the Pyramids of Giza are surrounded by desert. But 4,600 ...

Those battling chronic illness know what a long, difficult battle it is to get well again, understanding all too well that ...

The U.S. Department of Health and Human Services Wednesday released a new food pyramid that flips the original on its head — quite literally. Gone is the grain-heavy emphasis that defined earlier ...

Upside-down food pyramid reveals how nutrition advice ignores affordability, culture, plant protein, and economic inequality.

The Trump administration released new dietary guidelines that will shape everything from school lunches to medical advice.

Plus, Elon Musk’s chatbot faces international ire, Dems eye a suspicious bet about Maduro, and more — all in this week’s ...

Thousands of years after the Pyramids of Giza were built and researchers are still learning new things about them to this day. A recent study has been looking at the Pyramid of Menkaure — the smallest ...