geophysics

A publication in the journal AIP Advances reports the detection over the tropics of a large ozone hole, defined as an area where more than 25% of the usual ozone has been lost. The hole would be comparable in depth to the well-known hole over Antarctica, but would cover an area seven times larger.

Volcanic monitoring in the Canary Islands must be constant. Not only because the archipelago is "one of the most interesting active volcanic regions on the planet", according to the IGN, but above all because "volcanism in the Canary Islands poses a potential risk to some two million people" who live on the islands or visit them as tourists.