A Chinese research team has produced bulk hexagonal diamond, a crystal structure long theorized to be harder than ...

A research team led by Sun Jian at Nanjing University has produced recoverable, millimeter-sized crystals of hexagonal ...

Diamonds are famous for their strength, but scientists have long suspected that another form of diamond might be even harder.

Atomic structure of the hexagonal diamond. Image from the study. Researchers named it lonsdaleite, after crystallographer Kathleen Lonsdale, but for decades, no one was sure it truly existed. For 60 ...

Diamond is famously known as the hardest mineral on Earth. But researchers have been pursuing an unusual variant of it — known as hexagonal diamond — that might be even harder. After decades of claims ...

The Freedom Plane, a customized Boeing 737, is taking flight with some of the country's historical documents on board. A national tour kicked off on Monday, March 2, from Washington, DC to Kansas City ...

The veteran pilot made a split-second decision to land on a slab of Hudson River ice on Monday night — giving him and a teen flight student seconds to flee the cockpit to swim to safety through ...

The shootdown of three American F-15E Strike Eagles appears to have been a case of mistaken identity by Kuwaiti air defenses. Three US Air Force F-15E Strike Eagle fighter jets were shot down by ...

NEWBURGH, New York (WABC) -- A mini version of the Miracle on the Hudson took place Monday night, 60 miles north of New York City. Officials says a small plane, carrying two people, crashed into the ...

Hypersonic flight could one day make long-haul travel as quick as a short movie. Researchers are testing how turbulence behaves at extreme speeds, a critical hurdle for designing these aircraft. Their ...

It was a mini Miracle on the Hudson -- in the heart of the Hudson Valley as opposed to the heart of Manhattan. A small plane attempting an emergency landing crashed into the frigid Hudson River Monday ...

Flights at Newark Liberty International Airport were "temporarily suspended" after a JetBlue flight had to make an emergency landing due to smoke in the cockpit caused by an engine issue, officials ...