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 ...

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 ...

On the morning of Jan. 26, as two Alaska Airlines flights from Seattle to Hawaii lifted off six minutes apart, the pilots each felt a slight bump and the flight attendants at the back of the cabin ...