pexels-spacex-586056

Members from the European Space Agency (ESA) met to decide on the future of its activity. They have decided to invest 18.5 billion euros into space research. This will fund future missions to the moon and mars, along with a plan of beaming solar energy to earth from space.

 

Photo by: https://www.pexels.com/photo/white-outer-space-satellite-586056/

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Graywater

Waste water produced in residences can be divided into two types. Black water, which has fecal secretions from toilets or nutrients from the kitchen, and

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