Midair collisions throughout aviation history have brought some of the worst tragedies in the sky. But they've also left ...

Attack helicopters have become increasingly important in the arsenals of emerging global powers. With their formidable ...

Nearly all ammonia is produced using methane via the Haber-Bosch process, which requires high-temperature and high-pressure ...

The militant group Hamas has announced — and Israel has confirmed — the identity of the next three hostages to be released Saturday in the four ...

A combat air patrol of American and Canadian fighter jets was scrambled this week after multiple Russian warplanes were ...

Alex Michelsen hung on to defeat Tung-Lin Wu and help the United States take a 2-0 lead in their matchup against Taiwan in Davis Cup qualifiers on Friday in Taipei City. American Marcos Giron opened ...

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