Researchers from the University of Nevada-Reno have developed sheep which have partially human organs. They hope to one day create animals that can develop human organs for transplants.

American and French researchers have successfully cloned a horse using adult horse skin cells. The foal, named Paris Texas, is thought to be the first North American cloned horse.

Reptiles have been around for a long time. They are believed to have evolved from amphibians and have developed several adaptations for life out of water. Lizards, snakes, turtles, crocodiles, ... Read More

Limbic system structures of the brain are responsible for controlling various functions in the body. Some of these functions include interpreting emotional responses, storing memories, and regulating hormones.

Researchers state that due to extreme weather conditions and loss of habitat, monarch butterfly populations are rapidly declining. Monarch butterflies migrate annually from Canada to Mexico.

Plants and animals have several cellular structures in common. These include ribosomes, mitochondria, and a plasma membrane. There are other structures however, that are unique to each type of cell. ... Read More

The variation in the form of macromolecules is largely responsible for molecular diversity. Much of the variation that occurs both within an organism and among organisms can ultimately be traced ... Read More

Paleontologists have discovered the 500,000 year old remains of a mammoth at a construction site northwest of Los Angeles.

Henry Doorly Zoo officials announced that the first test tube gorilla, Timu, does not seem interested in caring for her newborn.

In sexual reproduction, two individuals produce offspring that have genetic characteristics from both parents. These offspring however, are not always strictly male or female. Some animals have both male and ... Read More

Do you know the difference between a seal and a sea lion? California Marine Life Identification is a valuable tool for anyone interested in learning about marine life and marine ... Read More

Have you ever heard of an animal called a Lutra lutra? In the Scientific Name Game your mission is to identify the correct organism for the given scientific name.

Studies show that rats enjoy tickling and emit 'chuckles' at tones higher than humans can hear.