Time crystals, a collection of particles that "tick"—or move back and forth in repeating cycles—were first theorized and then ...

A strange form of matter called a time crystal has fascinated physicists for about a decade. These systems move in repeating cycles, even without a steady external push. Now, researchers at New York ...

Add Yahoo as a preferred source to see more of our stories on Google. Members of the National Shield Forces, affiliated with Yemen's internationally recognized government, take control of the main ...

A thin, watery layer coating the surface of ice is what makes it slick. Despite a great deal of theorizing over the centuries, though, it isn't entirely clear why that layer forms.

Pakistan’s Defence Minister Khawaja Asif admits security forces face operational challenges in Balochistan as violence ...

(CNN) — Saudi-backed forces moved to capture a key southern Yemeni city on Thursday after Riyadh accused the UAE of helping a separatist leader flee. Citing “reliable intelligence,” the Saudi-led ...

A suspicious object discovered during a security sweep at Palm Beach International Airport ahead of President Donald Trump’s departure from Mar-a-Lago in Florida on Sunday prompted the US Secret ...

From Se7en to Gone Girl these thriller movies deliver mystery tension and payoff while keeping you locked into every decision ...

According to reports, Russian soldiers are experimenting with a new kind of winter camouflage ...

Add Yahoo as a preferred source to see more of our stories on Google. Syrian security forces began deploying Saturday in a neighborhood in the northern city of Aleppo amid sporadic gunfire after days ...