Archive for September 2009
By Haley Walker
Walkerh4@msu.edu
Great Lakes Echo
Sept. 30, 2009
Great Lakes water levels could drop by up to two feet by the turn of the century as temperatures rise, according to a recent series of reports released by the Union of Concerned Scientists.
The water decline is a response to global climate change, according to the report by the group of scientists and citizens that advocates for science-based solutions to environmental problems. Warming temperatures reduce ice cover and increase evaporation. Lake Huron and Lake Michigan are projected to have the greatest changes.
(NY) The New York Times – Three years ago, a technological breakthrough gave dairy farmers the chance to bend a basic rule of nature: no longer would their cows have to give birth to equal numbers of female and male offspring. Instead, using a high-technology method to sort the sperm of dairy bulls, they could produce mostly female calves to be raised into profitable milk producers.
By Rachael Gleason
Great Lakes Echo
rachaelkaygleason@gmail.com
Sept. 29, 2009
Winter road safety is adding salt pollution to Great Lakes streams, according to a recent government study.
The U.S. Geological Survey examined approximately 100 streams in 19 northern states for road salt and other sources of chloride.
Of the 52 streams tested in Great Lakes states, a quarter had chloride levels that exceeded federal standards designed to protect drinking water supplies.
Levels higher than 250 milligrams per liter give water a salty taste, according to the study.
Excessive chloride can also be harmful to fish, plants, insects, worms …
Jeff Gillies
jeffgillies@gmail.com
Great Lakes Echo
Sept. 28, 2009
Great Lakes climate science is often stuck in the past. Studies show that all five lakes have warmed up over the past century. But they rarely predict how much the water will warm in the next one.
A new tool from Canada could help buck that trend, warning policymakers of new threats from foreign organisms and other waterborne consequence of global climate change.



