If life emerged once, why not more times?
A new procedure for donating hearts and other organs is saving lives. But for some it challenges the definition of death.
This profound meditation on the science of life explores where it has come from and how it evolves
An organism living in ocean muck offers clues to the origins of the complex cells of all animals and plants.
Perhaps the most startling discovery to come out of the study of life’s diversity and relatedness at the molecular level is the movement of genes across species lines - HGT. It turns out that HGT has been widespread and important.
The first cells may have been anaerobic, heat tolerant, and hydrogen-fed.
What's in a minimal cell? This is very close to the basic requirements of life as we know it. For a full 17 percent of the genes we have no clear idea of what they do.
An evolutionary burst 540 million years ago filled the seas with an astonishing diversity of animals. The trigger behind that revolution is finally coming into focus.
A new analysis supports the hypothesis that viruses are living entities that share a long evolutionary history with cells.
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