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.

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 …

Scientists think that by 4.3 billion years ago, Earth may have developed conditions suitable to support life. The oldest known fossils, however, are only 3.7 billion years old.

Jan 21, 2026 · Life - Origin, Evolution, Abiogenesis: Perhaps the most fundamental and at the same time the least understood biological problem is the origin of life. It is central to many scientific and …

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 …

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.

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 …