A National Radio Quiet Zone In West Virginia, designed to protect radio telescopes, is also easing the symptoms of people who say they're made sick by radio transmissions.

The United States is seeking more overseas visitors but visa restrictions are slowing a potential flood of travellers from some emerging economies.

He may not move like he used to, but Muhammad Ali's mind is still sharp as a razor.

Low-income residents of the US state of Maine have come up with a novel solution to the problem of rising healthcare costs.

As the year turns, words of leading US economist could suggest yet more bleak times ahead: "Thank goodness emerging markets can carry the global economy."