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Transplanting embryonic stem cells from embryo into adult as a means of rejuvenating diseased cells, tissues, and organs poses ethical and moral challenges. In recent years, stem cell-derived nerve and glandular tissue has been transplanted into the ...
Book Chapter
Chemical and Biological Weapons of Mass Destruction
Chemical warfare began in prehistoric times with the use of such weapons as poisoned arrows. However, World War I was the beginning of modern-day chemical warfare. The birth of biological warfare evolved during World War II. As a result, mankind has ...
Book Chapter
Robotic Versus Manned Space Travel
Manned space flights are supported by the notion that humans have an innate need to explore the universe—in specially protected spacecrafts—but at great risk to life. Congress wants manned space travel to support an industry that builds the costl...
Book Chapter
Many genetic disorders can be detected with tests of blood and chromosomes. Genetic screening is the large-scale use of these tests as part of the public health program. Different members of society, worldwide, have advocated genetic screening to ach...
Book Chapter
Many think that television and other media are primarily responsible for the aggressiveness of American youth and the youth of Western nations. Several experimental and longitudinal studies have provided considerable support to this claim. However, t...
Book Chapter
Around the world, coastlines are retreating. Economic and environmental realities offer two choices: plan a managed retreat now, or undertake a vastly more expensive program of armoring the coastline as required and retreat through a series of unpred...
Book Chapter
Modern hunting is embroiled in a major controversy. There are approximately 14 million hunters confronting an indeterminate number of animal rights activists who aim to have hunting banned in the United States. The two groups are polarized. This cha...
Book Chapter
During the first week of class, strive to create an atmosphere of mutual trust and respect. This gives the students a chance to get to know you as a person, and you will also get to know them in the process. A key challenge is to make students feel c...
Book Chapter
This book starts with a rather simplistic view of what light is. This chapter starts with a simple explanation which will be easy to understand and it will explain quite a few things. Also, historically, it's the one that came first; hence the title...
Book Chapter
You're probably really upset that all you have so far is a simple little ray model of light. When do we get to the good stuff, you say? How about now? As a bonus, you get to look at lots of pretty colors. This chapter addresses how light can be model...
Book Chapter
It's time to take some of the things we know about light and put them to good use. In this chapter, the author discusses various optical instruments like antennae and lenses, and in the Applications section, you get to learn how telescopes work. That...
Book Chapter
If you browse through the sunglasses at your local department store, you'll find that some of them are advertised as "polarized." What is it that makes a pair of polarized sunglasses so special, and are they really better at reducing glare, as advert...
Book Chapter
Light doesn't always travel in straight lines. It can bend around corners, just like sound. When it does change direction like this, you end up with light waves that originated from different places coming together at one spot. This can lead to some ...
Book Chapter
This chapter is, as the title indicates, all about eyeballs and how they work. We'll use just about everything we've learned so far, plus one or two new things, including how to draw 3-D pictures. You'll be asked to do a number of little projects, on...
Book Chapter
Fire the Photon Torpedoes, Mr. Sulu!
Yeah, what about those photon torpedoes? Aren't photons supposed to be little light particles? Yes, they are, and they constitute the third model for what light is. Although much of the photon stuff is beyond the scope of this book, the author gives ...