… nervous system consists of several parts. The main structures are the brain and the spinal cord. The system includes nerves that sense external and internal stimuli and then relay the information to the central processing unit -- the brain. The…

… effect the moral standards of society? Can the information produced by it become a beneficial asset or a moral evil? For example, X chromosome markers can be used to identify ethnicity. A seemingly harmless collection of information from the Human…

… Dictionary defines the heart as "the viscus of cardiac muscle that maintains the circulation of the blood". It is divided into four cavities; two atria and two ventricles. The left atrium receives oxygenated blood from the lungs. From there the…

… see the steam rolling from a mountain stream on a cold winters morning is a beautiful sight. However, to look out over the horizon and see the white spray of salt water coming from the blow of a huge hump-back whale is much more exciting sight and…

… immune system is the most incredible part of our body. It has the task of keeping the body healthy by destroying pathogens and disease-producing organisms, and by neutralizing their toxins. The immune system employs the services of the skin, mucous…

… is important in understanding diseases and developing ways to prevent them. The polio vaccine, kidney transplants, and heart surgery techniques have all been developed with the help of animal research. Through increased efforts by the scientific communit…

… of the successful cloning of an adult sheep-in which the sheep's DNA was inserted into an unfertilized sheep egg to produce a lamb with identical DNA-has generated an outpouring of ethical concerns. These concerns are not about Dolly, the now famous…

… nude was used as a canon of human perfection. The sensuous male form in motion was considered the crowning achievement of Greek sculpture. Its asymmetrical balance, this motion while at rest, and the resulting harmony of opposites is the essence of…

… a B-29 bomber named Enola Gay flew over the industrial city of Hiroshima, Japan and dropped the first atomic bomb ever. The city went up in flames caused by the immense power equal to about 20,000 tons of TNT. The project was a success. They were…

… once thought of the sun and other objects as simple gaseous spheres governed by the basic laws of the universe; gravity, temperature, pressure. In 1939, the hydrogen fusion reactions that powered the sun were discovered, and the detailed model…