Ever since the Industrial Revolution, air quality has been slowly developing into one of the world's most pressing issues. As pollution from industry, automobiles, and chemicals has increased, environmental advocates have become more vocal in their demands for legislation.

Although climate changes have occurred at times in the distant past, the rate at which climatic changes are taking place today seems to be increasing, causing concerns that the environment and population of humans and other animals will be adversely affected.

The conservation of our natural resources is a major issue for environmentalists today. Many natural resources—from fossil fuels to undeveloped lands—exist in finite supplies. The only way to ensure that they will still be available for future use is to protect them and to recycle as often as possible.

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Because fresh water is limited in supply, ensuring that water is safe for human use and consumption is a major concern. With the expansion of industry and the dumping of chemicals and other waste products, water sources have become smaller and more dangerous. Today, environmentalists struggle to make the public aware of how important it is to conserve and protect the water supply.

Environmentalists are committed to limiting the spread of the human population into wilderness areas, in the hope of preventing further losses of irreplaceable animals.

Causes of Cancer delves into the many factors responsible for causing cancer, from environmental conditions to abnormal in vitro and in vivo developments to viruses and cancers caused by exposure to radiation. This richly informative book also empowers readers by highlighting how avoiding exposure to particular carcinogens may prevent certain forms of cancer.

Diagnosis and Treatment of Cancer helps readers understand the nature of cancer and the different types of cancer. Comprehensive and accessible, this book explains the various methods used to detect and diagnose the disease. An in-depth chapter is dedicated to each of the key methods of treatment—cell transplant and biological therapy, chemotherapy, radiation, surgery, and alternative therapies.

Prevention of Cancer presents the latest research on key factors believed to defend against the occurrence of cancer. Chapters focus on the major cancer risk factors, such as smoking, sun exposure, lifestyle and nutrition, genetics, and environmental contributors. This book also outlines steps readers can take to lower their risk for cancer, and special attention is given to what cancer survivors can do to decrease their chance of a relapse.