Although the curriculum includes the environmental hazards of plastic bags, the consultant also added a five-point question to a workbook asking students to list some advantages. According to the teachers’ edition, the correct answer is: “Plastic shopping bags are very convenient to use. They take less energy to manufacture than paper bags, cost less to transport, and can be reused.”
The safety plan for any nuclear power plant reads like a doomsday book. Earthquakes, floods, airplane crashes, mass evacuations, terrorist attacks, hurricanes, tornadoes — all are disaster scenarios deemed a risk to reactor safety. The most likely threat, however, involves none of these headline cataclysms. Fires regularly occur at the 104 U.S. nuclear plants nearly 10 times a year on average. About half the accidents that threaten reactor cores begin with fires that can start from a short circuit in an electric cable, a spark that ignites the oil in a pump, or an explosion in a transformer.