Some border collies and other dogs can learn the names of hundreds of objects, with Rico's 2004 study showing 200 toy names. Tests in a room where he could not see his owner ruled out visual cues, and when shown a new toy among familiar ones he picked it out for a new name, even weeks later. A recent study compared these 'label-learner' dogs with matched dogs and found they were consistently more curious about new objects, more selectively interested in particular items, and better at controlling impulses. Children learn differently: by around age two they pick up roughly ten words a day by reading what adults intend, even about things not in the room. Dogs seem to form object-name links, not the shared-intention understanding behind human language.

Israeli reports also say the cabinet directed the military to prepare for a possible new attack on Iran.

Angkor, near Siem Reap in northern Cambodia, was the capital of the Khmer Empire, which ruled much of mainland Southeast Asia between roughly the 9th and 15th centuries. At its height the city spread across about 3,000 square kilometres, making it the largest pre-industrial city on Earth by area. Its growth depended on water: huge reservoirs called barays, along with canals and embankments, stored monsoon rain and carried it to rice fields. That system let farmers harvest more than once a year and fed a very large population through the dry season. The temple complex of Angkor Wat, built in the early 12th century, is the best-known monument and still stands at the heart of the park.