The history of life on Earth traces the processes by which living and extinct organisms evolved, from the earliest emergence of life to the present day.

The origin of life on Earth stands as one of the great mysteries of science. To find out if we are alone in the galaxy, we will need to better understand what geochemical conditions nurtured the first life forms.

Jul 19, 2025 · Scientists believe life began with what is called “abiogenesis”—the natural process by which living organisms arise from non-living matter. It’s not just a theory; it’s a framework supported …

Simple organic molecules, similar to the nucleotide shown below, are the building blocks of life and must have been involved in its origin. Experiments suggest that organic molecules could have been …

All life tends to increase: more organisms are conceived, born, hatched, germinated from seed, sprouted from spores, or produced by cell division (or other means) than can possibly survive. Each organism …

Understanding the origin of life can provide insight into the fundamental processes that govern the development and evolution of living organisms, which can have implications for human health and …

Mar 14, 2025 · Learn what fossil evidence reveals about the origins of the first life on Earth, from bacteria to animals, including the phyla we know today.

Jul 25, 2025 · The origin of life on Earth is one of science’s greatest mysteries. Scientists explore the intricate steps that transformed non-living matter into the first biological systems.

Nov 26, 2025 · How Life Actually Started on Earth: Unraveling the Mystery of Abiogenesis The exact mechanism of life’s origin remains a profound scientific challenge, but current evidence suggests it …

Jul 31, 2025 · Long before breath, before heartbeat, before even the pulse of a single cell, Earth was a lifeless sphere wrapped in fire and ice. Some 4.5 billion years ago, the planet was born in the violent …