A new study theorizes that evolution ticks at different speeds, especially when a big group of organisms first appears.

Translation of L'évolution du vivant. An introduction to the study of evolution : General observations on the living world ; Biological evolution and its occurrences ; Interpretation of evolutionary ...

A major event in the evolution of organisms on earth was the development of complex, multicellular life forms made of eukaryotic cells, which are thought to have come from prokaryotic cells. Studies ...

Environmental change doesn’t affect evolution in a single, predictable way. In large-scale computer simulations, scientists ...

In Earth's fossil record, soft-bodied organisms like jellyfish rarely stand the test of time. What's more, it's hard for any ...

Discover interesting facts about how evolution works, the different patterns that can emerge from evolution, how quickly organisms can evolve, and whether evolution is a random or ordered process When ...

PART 1: THE HISTORICAL FRAMEWORK: EVOLUTION AS SCIENCE: Before Darwin -- Darwin and natural selection -- The arguments and the evidence for evolution -- PART 2: ORIGINS: THE ENORMITY OF TIME: The ...

Chromosphaera perkinsii is a single-celled species discovered in 2017 in marine sediments around Hawaii. The first signs of its presence on Earth have been dated at over a billion years, well before ...

Researchers find that oxygenation of Earth's surface is key to the evolution of large, complex multicellular organisms. If cells can access oxygen, they get a big metabolic benefit. However, when ...

A scientist from Protein Evolution works in the company's New Haven, Connecticut, facility. In nature, mutations are introducted randomly into organisms. The strongest ones survive. Protein Evolution ...