A lucid dream is one in which you realise you are dreaming while the dream is still going. That awareness is a trainable skill, and some dreamers can influence the characters, story or setting, though steering is not what defines the experience. Lucid dreams can be verified from outside: a sleeper can make a prearranged pattern of eye movements that shows up on a sleep lab's recordings, proving they are aware inside the dream. The term was coined by Dutch writer and psychiatrist Frederik van Eeden in 1913, though people described the experience long before. Stephen LaBerge, who founded the Lucidity Institute at Stanford, is widely seen as the leading modern researcher, and therapists have explored lucid dreaming as a way to address recurring nightmares.

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.