The Democratic and Republican presidential nominees skewer each other at Hofstra University in the first of three presidential debates, with heated moments raising questions about "temperament." (Photo: AFP)
The world's largest radio telescope began operating in southwestern China Sunday, a project which Beijing says will help humanity search for alien life.
The Five-hundred-metre Aperture Spherical Radio Telescope (FAST), nestled between hills in the mountainous region of Guizhou, began working around noon.
Built at a cost of 1.2 billion yuan ($180 million), the telescope dwarfs the Arecibo Observatory in Puerto Rico as the world's largest radio telescope, with a reflector as large as 30 football fields, it said.
Hillary Clinton and Donald Trump are set to square off on Monday for the first of three presidential debates, with both candidates hoping to court the large number of undecided voters.
Dogs, big and small, and some in tandem braved the large swell that greeted them at Huntington Beach, California at the annual Surf City Surf Dog event.