Fracking is a method of extracting natural gas from the ground by injecting water and chemicals into deep wells at high pressure. The process breaks apart the underground rock, releasing the gas so that it can be captured. Some argue that fracking can address the need for a cleaner source of domestic energy by providing an alternative to oil and coal.

However, there is mounting evidence of the negative impacts that fracking has on the groundwater, given that the hazardous chemicals used are exempted from the Safe Drinking Water Act.

LED stands for light-emitting diode. These impressive little lights are found in tons of different applications and devices. They produce the numbers in your digital clock, transmit information from your remote control, light up your watch, and tell you when your toaster is on. Unlike ordinary incandescent bulbs which use a filament that can burn out, LEDs are illuminated by the movement of electrons in a semiconductor material.

LEDs generally cost more than incandescents or CFLs but they use less energy and last significantly longer.

This issue is not completely cut and dry. If you use a biological definition of meat as a protein that comes from an animal, then the answer is yes. However, the dietary rules of some religions separate fish from other types of meat. The USDA groups fish, red meat, poultry, beans and peas into a protein food group.

And Pescatarians choose to eat fish but not other types of meat. Bottom line, the distinction really depends on the definition of meat you choose to use.