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Science Bulletins: Ozone’s Slow Recovery

Every September and October, a “hole” of varying size emerges in Earth’s ozone layer over Antarctica, an effect of a buildup of ozone-depleting human-made chemicals high in the atmosphere. Now that levels of these chemicals are declining as a result of international agreements put in place decades ago, scientists predict that the annual ozone hole is poised to begin a shrinking trend.

The American Museum of Natural History is one of the world’s preeminent scientific and cultural institutions. Since its founding in 1869, the Museum has advanced its global mission to discover, interpret and disseminate information about human cultures, the natural world and the universe through a wide-ranging program of scientific research, education and exhibition.