A much-debated theory holds that 4 billion years ago, give or take, long before the appearance of dinosaurs or even bacteria, the primordial soup contained only the possibility of life. Then a ...

A molecule that could help build otherworldly life is present on Saturn’s moon Titan, researchers have discovered. “It’s very positive news for putative-Titan-life studies,” says Jonathan Lunine, a ...

Understanding the human cell is vital to progress in the life sciences and to human health. Cells are the smallest, most basic unit of life responsible for all of life’s processes. A typical human ...

Cells are the smallest unit of life. Cells in multicellular plants and animals are arranged into tissues, organs and organ systems. Cells. Tissues. Organs. Organ systems. And the organism itself.

All living organisms are made of cells, which are the smallest unit of life. Plants and animals have up to trillions of cells that work together to produce ever more intricate organization and ...