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Hot Topic Origins Origin & Evolution of Life
Evolution's Sweet Tooth
Topic: Origin & Evolution of Life
How did intelligence evolve? A scientist studying differences between humans and great apes may have found a biochemical step in that direction.

Weird Life on the Mats
Topic: Origin & Evolution of Life
Do extinct species represent failed evolutionary experiments? At least for some more closely related to today's crabs and lobsters, University of Southern California scientist David Bottjer says that if many such early animals look strange to us, it is not because they were strange.

Eukaryotic Origins: Revolution in the Classification of Life
Topic: Origin & Evolution of Life
The most recent classification of all life on Earth includes three domains: Archaea, Bacteria (also called Eubacteria) and Eukarya, each of which contains a number of kingdoms.

Defining Life
Topic: Origin & Evolution of Life
What is life, exactly? This is a question that keeps biologists up at night. The science of biology is the study of life, yet scientists can't agree on an absolute definition. What about a computer program that learns and evolves? Can a wild fire - which feeds, grows, and reproduces - be considered a living entity?

Unfamiliar Life
Topic: Origin & Evolution of Life
Why should the particular polymer combinations of Earth reign supreme?

A Pothole in the Road of Life
Topic: Origin & Evolution of Life
Desert potholes may provide clues to the evolution of life on Earth.

The Cambrian Explosion: Tooth and Claw
Topic: Origin & Evolution of Life
Scientists ponder the causes of the Cambrian explosion.

Uranus and Neptune - and the Origin of Life on Earth
Topic: Origin & Evolution of Life
Constraints on the giant planets and birth aggregates of the solar system.

Clues to the Last Common Ancestor
Topic: Origin & Evolution of Life
Molecular detectives have traced human ancestry back to the so-called Mitochondrial Eve, the last female common ancestor. More recent research has posited a Y-chromosome Adam, the last male common ancestor.

Genetic Alchemy: Turning Lobsters into Fruit Flies
Topic: Origin & Evolution of Life
Biologists at the University of California, San Diego, now have genetic evidence that explains how such drastic alterations to body plans were able to occur during the early evolution of animals.
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