Ice baths are popular for recovering after hard exercise, but a trial of 40 active adults found no advantage for them. After a workout that damaged the thigh muscles, participants were assigned to a 10°C cold bath, a 42°C hot bath, 60°C hot air, or sitting still for 30 minutes. None of the methods restored strength significantly faster, and the cold bath had the slowest recovery, with strength back to about 82% after 72 hours versus 88-89% for the others. Hot-water immersion raised heat shock protein 72, a cell-protection molecule tied to repair, and heat showed better markers of damage and inflammation. Cold did reduce how sore people felt.

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.