Earth Day is coming up on April 22.
It's an occasion to think about the risks we all face from climate change — and to recognize the toll these problems take on the people in the developing world, who are especially vulnerable. When oceans rise, when drought strikes, the consequences can be dire. People are losing their homes and becoming climate refugees, losing their crops, losing their water sources. Disease-carrying insects are moving into new territory.
"People who are poorly off are always going to bear the brunt when things go badly," says Dr. Alfred Sommer, epidemiologist and dean emeritus at Johns Hopkins Bloomberg School of Public Health.
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