In Lisbon, Portugal, the United Nations has kicked off a five-day conference on restoring the health of the world’s oceans. Secretary-General António Guterres warned that global heating is pushing ocean temperatures to record levels, creating fiercer and more frequent storms and pushing sea levels higher. Rob Higgs, a climate activist with the group Extinction Rebellion, joined protests ahead of the talks.

Rob Higgs: “The oceans are empty. We’re catching less fish now than we were 30 years ago, with all the advances in technology. The seas are dying, and we need an appropriate urgency that we’re not seeing from our leaders.”