Chinese researchers have proposed a simple yet powerful theory to explain one of physics’ oldest puzzles: why time only moves forward and why travelling to the past remains impossible. Physicist Cai ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Here’s what you’ll learn in this story: Atomic clocks will only see a loss of 1 second in accuracy over a ...

The dream of interstellar travel has captured science fiction for decades, but the physics of distance, energy, and time make it nearly unreachable with today’s technology. I received an inheritance ...

Figure 1. Conceptual illustration of label-free, multiphoton photoacoustic microscope (LF-MP-PAM). Near-infrared femtosecond laser enable us to observe endogenous NAD(P)H of neurons in brain slice and ...

NATO Army chief sounds alarm: "The threat is real" Can you leave chargers plugged in all the time? An expert explains Trump Pledged ‘No Tax on Social Security.’ The Tax Bill Says Otherwise. I've ...

Forbes contributors publish independent expert analyses and insights. Emese Maczko is a travel writer covering sustainable travel. The U.S. State Department urges Americans to reconsider travel or ...

Travel to the UK requires an Electronic Travel Authorization (ETA). The ETA is directly connected to passports (vs a visa fee often required to enter other countries) and is valid for 2 years. Per ...

Space — the final frontier. These are the words that introduce every episode of classic "Star Trek," the show that essentially popularized the concept of traveling the stars at the speed of light – or ...

Avoya Travel has launched a new white label education solution called Our Travel Academy. With no current industry-wide education standard available to help new travel advisors gain the necessary ...

The motion of whizzing electrons has been captured like never before. Researchers have developed a laser-based microscope that snaps images at attosecond — or a billionth of a billionth of a second — ...