We've done it to ourselves and to man's best friend — researchers have found microplastics in human and canine testes. (Allen J. Schaben / Los Angeles Times) Researchers have located one more ...

Scientists have found significant quantities of microplastics present in human and canine testicles, raising concerns surrounding their potential impact on the human reproductive system. Microplastics ...

Get inspired by a weekly roundup on living well, made simple. Sign up for CNN’s Life, But Better newsletter for information and tools designed to improve your well-being. Endocrine disruptors ...

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If we look across the whole of the mammal branch of the tree of life, we find there are many groups of mammals that have ...

If one of your testicles is slightly bigger than the other, don’t panic, this is completely normal for most men and boys. The human body is not perfectly symmetrical, which means that many body parts, ...