Studies of tens of thousands of fossils from the La Brea tar pits in California have found no clear evidence of any of the species evolving in response to falling temperatures as ice sheets spread ...

But that year turned out to be too dry for the finches to breed, and the two bird enthusiasts weren’t going to sit idle. Since they were in the Galápagos — nature’s “evolution laboratory ...

Charles Darwin's theory of evolution by natural selection ... Darwin did not have a great eureka moment on the Galapagos. He studied finches, tortoises and mockingbirds there, although not in ...

finches, barnacles, beetles and much more. "Cuidado," he wrote in another notebook around that time, using the Spanish word for "careful." Evolution was a radical, even dangerous idea, and he didn ...

often referred to as Darwin’s finches, are a prime example of adaptive evolution. When Charles Darwin studied these birds, he noticed variations in their beak shapes and sizes. These differences were ...

In most vertebrates, skin appendages such as hair, feathers, or scales originate from placodes—small, specialized skin ...

Thousands of fossils from the La Brea tar pits in California show no signs of mammals and birds evolving in response to ...

The researchers analyzed rare fossils of hatchling birds found in northern Alaska, which offered the earliest evidence of the ...

Scientists have documented the way a single gene in the bacterium that causes bubonic plague, Yersinia pestis, allowed it to ...