Our heart, lungs, hands and genes are all relics of an evolutionary past, revealing our true animal nature ...

The human body is a machine whose many parts – from the microscopic details of our cells to our limbs, eyes, liver and brain – have been assembled in fits and starts over the four billion years of our ...

We inhabit our physical forms every second of every day, yet we rarely stop to consider the complex biological engineering behind our most basic involuntary actions. The human body is a masterpiece of ...

Sad sack or serious salvation? A small group of scientists is angling to replace laboratory animals with living “organ sacks” grown from human cells. R3 Bio, a billionaire-backed biotech startup, is ...

Rachel Feltman: For Scientific American’s Science Quickly, I’m Rachel Feltman. Humans have been trying to replace ailing parts of our bodies for thousands of years, turning to prosthetic limbs, ...

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