U.S. Geological Survey

Study: Physical, Electric Barriers Best Defenses Against Asian CarpPlacing dam-like structures in Chicago waterways would be an almost foolproof method of preventing Asian carp from reaching Lake Michigan, while a less pricey electric barrier system also has solid prospects for shielding the Great Lakes from the invasive fish.
Cause Of Tremors In Suburbs Likely A Quarry BlastResidents in the western suburbs felt tremors early Monday afternoon, and federal officials believe the shaking was from a quarry blast and not a natural earthquake.
Officials Warn Of Great Lakes Water ShortageA federal analysis this week warned that the Great Lakes region could experience water shortages in some locations in coming years because of climate shifts or surging demand.
Indiana Earthquake Felt In ChicagoAn exceedingly rare earthquake struck central Indiana Thursday morning, and some Chicagoans felt tremors.
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