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The Student News Site of Northern Illinois University

Northern Star

The Student News Site of Northern Illinois University

Northern Star

The Student News Site of Northern Illinois University

Northern Star

NIU, DeKalb need bike lanes

By Melissa Burlingame | October 10, 2011

A critical mass is the minimum amount of material (fissile, if you want to be technical) needed to maintain a nuclear chain reaction. Without enough fissile material, nuclear energy cannot be produced.In the cycling world, a critical mass is an event...

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