Every breath of air, every strand of DNA and every cell in my body carries a chemical story that began long before Earth ...

From small ions to large molecules, cellular gates control what can pass in and out of cells. But how one such gate, called ...

The most diverse functions of a cell in the human body – from cell division and differentiation to motility and programmed cell death – are controlled by signaling proteins within the cell. This ...

The tiny pantheon known as the Asgard archaea bear traits that hint at how plants, animals and fungi emerged on Earth.

The human small intestine absorbs nutrients while protecting us from potentially harmful microbes. One of the cell types that ...