The Guardian

Mayors of Phoenix, Milan, and Paris warn in a joint Guardian article that extreme heat is a lethal political crisis, sharing urban strategies that reduced Phoenix heat emergency calls by 20%.

Massive swarms of Velella velella, known as "by-the-wind sailors," have washed ashore in the UK and Western Europe. The sudden summer appearance of these blue organisms triggered panic among beachgoers who mistook them for venomous Portuguese man-of-war.