Torrential rains and flash floods have killed at least 40 people in western Yemen and displaced hundreds more from their homes.

In Australia, new research confirms water temperatures in and around the Great Barrier Reef have reached their warmest in 400 years over the past decade, placing the world’s largest coral reef under even greater danger. This is Benjamin Henley, one of the study’s co-authors.

Benjamin Henley: “This is such a massive challenge that every single person on Earth needs to contribute to it, and I mean individuals all the way up to the world’s governments at our U.N.-scale meetings. The urgency could not be higher right now.”