In 1893 the naturalist William Saville-Kent published a book on the Great Barrier Reef that used colour lithographs and photographs to show coral reef life. Photographing reefs was very difficult in the 1890s, because cameras were bulky, exposures were slow, and the water had to be kept calm and clear. Most people had never seen a reef in colour, so the book gave them a first view of an underwater world that few Europeans had ever seen. Its images still show how the reef looked to scientists more than a century ago.

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.