Since we were small, we were told to compare things to a grain of sand, because comparing something to a grain of sand, meant that it was small or insignificant. But the microscopic photography done by Dr. Gary Greenberg...
According to recent reports, the world is facing the worst ever water crisis, with 844 million people not having access to clean water. Water pollution is one of the main causes for this, and fortunately, there are people like...

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