Evolution

Scientists are still puzzled as to why mammoths became extinct. Genetic mutations, recent discoveries, and Neanderthal hunting tools are all thought to have led...

So, how does a scientist define the existence of human life? Scientists have argued for centuries about the existence of life. One way is...

The domestic pigeon (Columba livia domestica) is a pigeon subspecies that was derived from the rock dove (also called the rock pigeon). The rock...

The Chihuahua is one of the smallest breeds of dog, and is named after the Mexican state of Chihuahua. Chihuahuas remained a rarity until...

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...