Introduction:
    During the Industrial Revolution many mills in southern New Hampshire and central Massachusetts were being built. Back then, people didn't know that factory waste was hazardous to the environment. Factories and mills dumped their waste products into the Nashua River, and the Nashua's tributaries. Pretty soon, the river's color depended on what color paper and textiles the up-river mills were making that day.

Challenge:
    The Nashua River was once considered to be a "Dead River," but it no longer is today! Use the links provided to research how the river was cleaned up. Next, research definitions for hazardous waste, environment, pollution, and tributaries. Finally, brainstorm how to keep our waters clean in the future.

Keep track of your findings on the work sheet that Miss McPartlan will hand out.