Rocks from the Hadean Eon, the first period in the geological timescale, have been dated in Québec. These are some of the ...

Earth has undergone incredible transformations over its 4.5 billion-year history,but what will it look like 1 billion years ...

The Great Oxidation Event (GOE) was a major turning point when oxygen began to build up in Earth’s atmosphere and surface ...

A study of fossils from the Permian-Triassic extinction event 252 million years ago shows that forests in many parts of the ...

Even if Earth does survive, it won’t be pretty. The temperature of our planet will be about 1,300 degrees C, hot enough to ...

A new DNA model suggests humans didn't reach Australia until 50,000 years ago, but archaeological data disagrees.

Mitochondria are the body's "energy factories," and their proper function is essential for life. Inside mitochondria, a set ...

They are some of the most intensely studied species on Earth, and yet there is no comprehensive molecular phylogenetic hypothesis of primate evolutionary history that summarizes the pattern and timing ...

In 1994 a NASA committee described life as “ a self-sustaining chemical system capable of Darwinian evolution.” The word “system” can mean an individual organism, a population, or an ...

The Cambrian explosion was an extraordinary phenomenon in the evolution of life on the planet that led to the emergence of ...

Worms radically reorganized their genomes during their move from sea to land, supporting the theory of punctuated equilibrium ...

Mirror Molecules: The Symmetry Rule Life Never Breaks Most organic molecules have a mirror-image twin. This concept is known as chirality. Yet life only uses one chiral molecule, not the other. The ...