This story was originally published by Grist and appears here as part of the Climate Desk collaboration

An alien species visiting Earth in the year 2020 would be forgiven for assuming that humankind had succeeded in pissing off some kind of vengeful God. This month alone, mega-wildfires ripped through Australia, massive king tides swept California shorelines, and, now, billions of desert locusts have descended on East Africa in an insect storm of biblical proportions. But climate change, not an angry deity, is to blame.

East Africa had an unusually wet year in 2019 — warming waters in the Indian Ocean produced a high number of tropical cyclones, which doused the coast and created “exceptional” conditions for locust breeding, Nairobi-based climate scientist Abubakr Salih Babiker told the Associated Press. Now, swarms of hungry insects are feasting on crops in the Horn of Africa, where millions of people already lack reliable access to nutritious food.