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Lake Michigan shipwreck an underwater classroom full of mystery, history
WGN-TV - Chicago, IL (6/22)
Morgan Shoal, near Chicago, Illinois, is a shallow body of water with a rock hard bottom. It is the site of the wreck of the Silver Spray, a ship that sank in July 1914.

44,000 students have sailed the bay on this unique school field trip
MLive (6/16)
More than 1,100 students have participated in the Science Under Sail educational program so far this year, and about 44,000 students since it began in 1998.

TEACH Calendar of Events
What's going on in your neighborhood this month? Meet other people and learn together at recreational and educational events! Our new dynamic calendar is updated daily with current educational events.
TEACH Water Pollution in the Great Lakes

table of contents
Introduction
Why so polluted?
Effects of water pollution
Dilution is NOT the solution!
Lake Erie: "We have met the enemy and he is us"
Further resources and references

Click for larger image. The pollution of our waterways became a national issue in June of 1969, the day that the Cuyahoga River, flowing through Cleveland, Ohio, on its way to Lake Erie, caught on fire because it was so polluted. Although this was not the first time that the Cuyahoga River had been in flames, the 1969 fire caught the attention of the nation and the fight began for increased water pollution controls, which eventually led to the Great Lakes Water Quality Act and Clean Water Act in the 1970s.

Water pollution is defined as a change in the chemical, physical and biological health of a waterway due to human activity. Ways that humans have affected the quality of the Great Lakes water over the centuries include sewage disposal, toxic contamination through heavy metals and pesticides, overdevelopment of the water's edge, runoff from agriculture and urbanization, and air pollution.

Graphic: Fire on the Cuyahoga River, November 3, 1952.

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