Spreading wildfires forced the evacuation on Friday of part of the famed Grand Canyon, with the US National Park Service appealing for visitors to stay calm.

Recent helicopter flights over the Potomac River are part of an ongoing effort to both better understand and more effectively control the black fly population, swarms of which have been a nuisance to ...

US President Donald Trump flew to Texas Friday as questions swirled over the authorities' response to flash floods that have ...