Evolution

Evolution is the change in the heritable characteristics of biological populations over successive generations. These characteristics are the expressions of genes that are passed...

There are numerous misconceptions about hyenas. They aren't just scavengers. Not all of them laugh. They aren't wild dogs. They aren't even related to...

Sirenia is the order of placental mammals which comprises modern "sea cows" (manatees and the Dugong) and their extinct relatives. They are the only...

The evolution of oysters and their shells goes back thousands of years. The first shellfish did not resemble the modern day oyster. It was...

Living things depend on the availability of water, but it breaks down DNA and other vital molecules. So how did the oldest cells deal...

Seals, commonly known as pinnipeds, are a broadly diverse and distributed clade of carnivorous, semiaquatic, fin-footed, primarily marine yet adorable mammals. They contain the...

Most people think that all primates are either humans or chimpanzees. But this is not always true. There is a lot of difference between...

The evolution of birds is one of the great mysteries of science. The fossil record does not provide a complete picture of how these...

Overview Archosauria is a family of amniote tetrapods with the crocodiles and birds as the only existing representatives today. These are tetrapods that developed a...