When deformed frogs -- many with missing legs or eyes, footless stumps, or misshapen jaws -- began to emerge from Minnesota wetlands, alarm bells went off. What caused such deformities? And could the mysterious cause also pose a threat to humans? Judy Helgen reports on the complexity of a growing catastrophe for frogs and broadens the issue as she researches and meets with scientists from around the world. She also shares the fears expressed by the teachers, students, and other citizens who found these creatures, sensed a problem, and looked to her for answers. Ultimately, this is a story about the biological beauty of wetlands and our need to pay attention to the environment around us.
Reliable water quality testing forms the basis for regulatory compliance and ensures the best possible quality drinking water for the community. This manual provides 30 common lab tests for process control in drinking water production. Each test includes purpose of test, equipment list, reagents, simplified methods and procedures, and warnings and cautions.
In Seoul, an American army doctor forces his assistant to dump bottle after bottle of formaldehyde into the drain. The drain runs into the Han River, the major river running through the middle of Seoul. His only reason is that the bottles are covered with a layer of dust. Six years later, a food cart operator, Gang-du falls asleep every time his dad, Hie-bong, is away from the stand for more than a few minutes. When his sister Hyun-Seo returns from school, a monster appears in the river and starts to attack the people lounging at its banks. Gang-du and Hyun-Seo are chased by the beast. Hie-bong tries valiantly to save his daughter, but the beast soon captures her and drags her away. They receive a call from the daughter's cell phone and try to rescue her from the large monster.
Features chapters by various authors on topics such as "Natural Materials for Sustainable Water Pollution Management," "Grain Size and Source Apportionment of Heavy Metals in Urban Stream Sediments," and more.