It’s freezing this week in the United States. And not just in the normally winter-frigid Northeast or Midwest. In southern states like Texas and Oklahoma, it has been in the 20s or lower.

Poor countries often have broken governments, shoddy infrastructure, and few systems in place to help when there is a mass crisis — which is why the U.N. Development Program found that there is a severe difference in how people are harmed during a climate disaster, depending on whether they live in a developing or rich country.

A hurricane hits. The terror and stress caused by the imposing wind and rain affect nearly everybody’s mental health, but perhaps none more so than expectant mothers. Then that stress and the pollutants whipped up by the storm wreak havoc on their bodies, and their pregnancies.