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 ...

Everywhere you go on this planet—on land, underground, in the air, and in the water—you’ll find life that has been shaped by evolution. In NOVA’s Evolution Lab, students will explore the ...

Yet, few of us pause to ponder the origin of this inaccurate image. In his book, The Shape of the Heart, Pierre Vinken takes us back through history to explore the etiology of the scalloped heart ...

“The central idea of biological evolution is that all life on Earth shares a common ancestor,” according to Understanding Evolution, a joint project of the University of California Museum of ...

In the final edition of The Origin of Species, published in 1872, Darwin emphasized that his theory of evolution hinged on several factors: natural selection; spontaneous variation (mutation ...

It is based on two types of protein: opsins, which change shape when light strikes them, and ion channels, which respond to the shape-shifting by generating an electrical signal. Genetic research ...

From Pekingese to St. Bernard and greyhound, dogs come in such startling variety it's easy to forget they belong to the same species. The profusion of breeds today -- at least 150 -- reflects ...

The protein that is coded for by the mutant allele doesn’t function correctly and can distort the shape of red blood cells. If a person has two copies of the mutant allele in their body cells ...

He noted that the shells of tortoises differed from island to island, and there were differences between the finches (a type of bird), as the shape of ... out his theory of evolution, based ...

or as a part of a discussion on the evidence gathered by Darwin for his theory of evolution. The video asks: 'Can you spot the differences between these finches?' The birds differ in plumage and body ...

Dotted Yet (left) and Oleksii G (right)/ Shutterstock Yes - this is called recurrent evolution. Traits that have emerged many times include a streamlined body shape suited to swimming and the ability ...