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NASA creates an incredibly detailed map of Earth's seafloors from space

As part of the ongoing effort, a NASA-supported team recently published one of the most detailed maps yet of the seafloor.

This tiny 100-gram bird, light as a feather, circles the Earth twice each year, making it ...

Over its lifespan of about 30 years, a single Arctic Tern may travel more than 2.4 million kilometres. That is the equivalent ...