Evolution is the way groups of life-forms change over time to better fit the places they live. It is why life takes "such endless forms most beautiful and wonderful," as British biologist Charles ...

He’s best known for popularising the theory of evolution in his book, On the Origin of Species, but Charles Darwin also had some very unsubstantiated ideas about human beings... In a later book ...

During the next 145 million years of evolution, the dominance of dinosaurs ensured that our distant mammalian ancestors remained no larger than a cat. But when a catastrophic asteroid or comet ...

One does not "believe" in evolution. It is a theory that scientists ... that connects many tested hypotheses and observable facts. Give students experience using scientific processes.

Octopuses have a large nervous system, with the average octopus having about 500 million neurons or brain cells. That puts it in the same “brain range” as smaller mammals such as dogs. Unlike ...