Jerome Powell, chairman of the Federal Reserve, said that the central bank will not hesitate to return to the zero-lower-bound interest rates that were instituted after the Great Financial Crisis and ...

Absolute zero is the lowest theoretical temperature, which scientists have defined as minus 459.67 degrees Fahrenheit (minus 273.15 degrees Celsius). That's even colder than outer space. So far, ...

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For decades, researchers have toyed with antimatter while searching for new laws of physics. These laws would come in the form of forces or other phenomena that would strongly favor matter over ...