For centuries lovesickness was considered a genuine illness, marked by an erratic heartbeat, pallor, poor appetite and low mood. In the Greek story of Antiochus and Stratonice, the physician Erasistratus diagnosed the prince's love by noticing that his pulse quickened in his stepmother's presence. Medieval doctors blamed excess black bile, and treatments included laxatives and bloodletting. Men of rank were prescribed baths and sport, while women were usually advised to marry. In the 1600s, Jacques Ferrand's treatise offered enemas and advice on clothing. Modern brain scans show that heartbreak activates reward circuits, which some researchers compare to withdrawal.

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.