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Scuba instructors in Cuba have started a new project of growing corals and replanting them. They are placing pieces of coral on flotsam salvaged from the beach and then put it back in the sea, in hopes of restoring dead and gone parts of the reef. The project is done in a very small scale on a very low budget.

 

Photo by: https://unsplash.com/photos/0G01UI1MQhg

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Declining global sperm count

A study at the University of Jerusalem showed that global sperm count and sperm concentration had declined by more than 50% in the last 46

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