TeachEngineering
Teach Engineering: This Landfill Is a Gas!
In this activity, students work as engineers to build and observe a model landfill. They will understand the process and pitfalls of the use of landfills as a method for the waste disposal.
Smithsonian Institution
National Museum of Natural History: American Mammals: Dwarf Shrew
Because the Dwarf Shrew is so small, it doesn't trigger the older snap or box traps, and before 1966, only 18 specimens had been collected. With the use of pitfall traps, which are basically cans sunk into the ground so that the animal...