(p. A9) LAGOS, Nigeria — Rapidly growing countries generally see sharp increases in air pollution as their populations and economies expand. But a new study of air quality in Africa published on Monday [Feb. 8, 2021] has found the opposite: One of the continent’s most vibrant regions is becoming less polluted.
The study, published in Proceedings of the National Academy of Sciences, found that levels of dangerous nitrogen oxides, a byproduct of combustion, in the northern part of sub-Saharan Africa have declined sharply as wealth and population in the area have increased.
. . .
The reason, according to researchers, is that an increase in pollution from industry and transportation in the area studied — from Senegal and Ivory Coast in the west to South Sudan, Uganda and Kenya in the east — appears to have been offset by a decline in the number of fires set by farmers.
For the full story, see:
(Note: ellipsis, and bracketed date, added.)
(Note: the online version of the story has the date Feb. 8, 2021, and has the title “A Surprise in Africa: Air Pollution Falls as Economies Rise.”)
The National Academy of Sciences study mentioned above is:
Hickman, Jonathan E., Niels Andela, Kostas Tsigaridis, Corinne Galy-Lacaux, Money Ossohou, and Susanne E. Bauer. “Reductions in No≪Sub≫2≪/Sub≫ Burden over North Equatorial Africa from Decline in Biomass Burning in Spite of Growing Fossil Fuel Use, 2005 to 2017.” Proceedings of the National Academy of Sciences 118, no. 7 (2021): e2002579118.