Newest wrinkle in rocketry is the “plug nozzle” engine. In the conventional rocket engine, fuel is burned in a roughly spherical combustion chamber, and turns into hot, high-pressure gas. To keep the ...

Scientists studying a 180-million-year-old fossil have discovered it's a member of a new species that plugs a gap in the crocodile family tree. Heavy, bony armor protected the backs and bellies of ...

Human connection to nature has significantly declined over the last two centuries. Technology, such as smartphone apps, can help people identify plants and animals. Social media groups and pages can ...