Climate Change Produces More Pollen, Longer Allergy Season
2022-03-21
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1Scientists at the University of Michigan say you are right if you think allergy season is getting worse and lasting longer.
2Climate change makes trees and plants produce more pollen, and start earlier.
3The bad news is that it will continue to get worse.
4The Michigan researchers say allergy season in the United States used to start around the middle of March.
5Now, however, especially in the warmer southeastern part of the country, it starts about one month earlier.
6If climate change continues at its current pace, it might start around January 1 by the year 2100.
7If, however, reductions in greenhouse gas are put in place, the sneezing would start closer to the end of January.
8Around the world, about 30 percent of people suffer from pollen allergies.
9Among children in the U.S., that number is about 40 percent.
10Yingxiao Zhang is lead author of the study, recently published in the journal Nature Communications.
11He said sneezing and runny noses associated with allergies cause people to miss work and spend more money on health care.
12The lost days of work hurt global economies.
13There are also about 25 million Americans with the condition known as asthma, which can make breathing difficult.
14Allergy season is extra hard for them.
15A longer allergy season in the future could cause problems, said Amir Sapkota, a professor from the University of Maryland.
16He was not involved in the Michigan study.
17Those in the southeastern U.S. will have more problems due to the warming climate, said Allison Steiner, who worked on the study.
18In addition, those in the northwestern U.S. will see alder tree pollen start much sooner.
19People in Texas sensitive to cypress tree pollen will notice a change.
20Other people who react to pollen from certain grasses and ragweed will also notice a difference in coming years, Zhang said.
21Bill Anderegg is a biologist and climate scientist at the University of Utah.
22He was not involved in the study.
23He said the new study notes that the next pollen increase will be twice as large as the increase since 1990.
24He called the Michigan study "important."
25He also said the pollen increase will have serious "health consequences."
26I'm Dan Friedell.
1Scientists at the University of Michigan say you are right if you think allergy season is getting worse and lasting longer. 2Climate change makes trees and plants produce more pollen, and start earlier. The bad news is that it will continue to get worse. 3The Michigan researchers say allergy season in the United States used to start around the middle of March. Now, however, especially in the warmer southeastern part of the country, it starts about one month earlier. 4If climate change continues at its current pace, it might start around January 1 by the year 2100. If, however, reductions in greenhouse gas are put in place, the sneezing would start closer to the end of January. 5Around the world, about 30 percent of people suffer from pollen allergies. Among children in the U.S., that number is about 40 percent. 6Yingxiao Zhang is lead author of the study, recently published in the journal Nature Communications. He said sneezing and runny noses associated with allergies cause people to miss work and spend more money on health care. The lost days of work hurt global economies. 7There are also about 25 million Americans with the condition known as asthma, which can make breathing difficult. Allergy season is extra hard for them. A longer allergy season in the future could cause problems, said Amir Sapkota, a professor from the University of Maryland. He was not involved in the Michigan study. 8Those in the southeastern U.S. will have more problems due to the warming climate, said Allison Steiner, who worked on the study. In addition, those in the northwestern U.S. will see alder tree pollen start much sooner. People in Texas sensitive to cypress tree pollen will notice a change. 9Other people who react to pollen from certain grasses and ragweed will also notice a difference in coming years, Zhang said. 10Bill Anderegg is a biologist and climate scientist at the University of Utah. He was not involved in the study. He said the new study notes that the next pollen increase will be twice as large as the increase since 1990. He called the Michigan study "important." He also said the pollen increase will have serious "health consequences." 11I'm Dan Friedell. 12Dan Friedell adapted this story for VOA Learning English based a report by The Associated Press. 13Where do you live? Have you noticed a change in allergies and pollen? Let us know. Write to us in the Comments Section and visit our Facebook page. 14Words in This Story 15allergy -n. a medical condition that causes someone to become sick after eating, touching or breathing something that is harmless to most people 16pollen -n. the very fine usually yellow dust that is produced by plants and travels in the wind or by insects so the plants can produce seeds 17greenhouse gas - n. a gas such as carbon dioxide that traps warm air in the atmosphere 18sneeze - v. to suddenly force air out through your nose and mouth with a usually loud noise because your body is reacting to dust, a sickness, etc. 19runny - adj. having a thin flow of liquid coming out 20asthma - n. a physical condition that makes it difficult to breathe 21consequence - n. something that happens as a result of an action or set of conditions