Learn how one-celled organisms, or single-celled organisms, helped build complex life.

Dr. Luis Buatois (Ph.D.) traces a series of hexagons with his finger, following the path carved by tiny organisms millions of years ago that have long since left these unique fossils in their wake. It ...

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In most narratives, the story of evolution is the story of organisms emerging from the ocean and eventually populating the land. But for some species that evolution also involved a return trip. Dozens ...

Using genetic discoveries based on modern bioluminescent organisms, scientists have estimated coral bioluminescence to have originated in the Cambrian period, about 540 million years ago. This finding ...

Eons ago, long before T. rex or any other large multicellular life roamed the planet, life on Earth got stuck. After inventing single-celled organisms and teaching them biochemical tricks such as the ...

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 ...

Sleep helps even things out. It was Darwin's great insight that natural selection was the primary factor driving the evolution of organisms. His detailed research ultimately lead to the acceptance by ...