In the latest edition of the best and brightest from the world of science news, find out about increasing marijuana and psychedelic use among young US people and how scientists are using oysters and grasses to clean up rivers. ScienceSeeker editors’ favourite posts within their respective areas of interest and expertise also cover many other important and exciting topics. Why not have a read, inform yourself, and indulge your scientific curiosity?

Avoid or limit fermentation, or ferment normally and remove the alcohol. Credit: Andy Brunning/Compound Interest

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