On May 12, a message appeared in a new WhatsApp channel, called "Death to the Arabs". The message urged Israelis to join a mass street brawl against Palestinian citizens of Israel.

Within hours, dozens of other new WhatsApp groups popped up with variations of the same name and message. The groups soon organised a 6pm start time for a clash in Bat Yam, a town on…

Using high-resolution imagery from Nasa's Terra satellite from between 2000 and 2019, a group of international scientists found that glaciers, with the exception of the Greenland and Antarctic ice sheets which were excluded from the study, lost an average of 267 gigatonnes of ice per year.

A gigatonne of ice would fill New York City's Central Park and stand 341 metres high.

The researchers also found that glacier mass loss accelerated. Glaciers lost 227 gigatonnes of ice…