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The human body is made up of a complex community of trillions of cells of diverse shapes and sizes, all working together to keep you alive. The smallest of these cells, like platelets and red blood ...

Four teams have coaxed human stem cells to organize themselves into embryo-like forms. The advance could shed light on fertility. By Carl Zimmer In its first week, a fertilized human egg develops into ...

Editor’s note: Dana Santas, known as the “Mobility Maker,” is a certified strength and conditioning specialist and mind-body coach in professional sports, and is the author of the book “Practical ...