(TIME) — Nuns are an endangered species. They are dying and not being replaced.

If you think the news is bad now, a world without nuns would be a far worse place. The nuns that I know are much too humble to tout their achievements and all of the good they contribute to society, but make no mistake, they are an integral part of the fabric that holds our civilization together.

In 2014 there were just 49,883 religious Catholic sisters in the United States, down 13% percent from 2010 according to figures from the Center for Applied Research in the Apostolate. To put it in greater perspective, that is a 72% decline since 1965.

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