Spirit

In 2020, a $186 million cleanup began at Minnesota’s Spirit Lake; four years later, 1.3 million cubic yards had been remediated and a 14-acre fish-spawning bay created

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In 2020, a $186 million cleanup began at Minnesota's Spirit Lake; four years later, 1.3 million cubic yards had been remediated and a 14-acre fish-spawning bay created

For over a century, the industrial engines of Minnesota’s Iron Range drove the economy of Duluth. Raw iron ore moved down through the St. Louis River basin, feeding massive manufacturing plants along the shore. But that industrial output came with a long-term environmental tax. At Spirit Lake, which is a broad stretch of the river … Read more

NASA just tested a thruster powerful enough for a human mission to Mars

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NASA just tested a thruster powerful enough for a human mission to Mars

A technology that could power crewed missions to Mars and robotic spacecraft throughout the solar system was recently tested in the U.S. NASAof Jet Propulsion Laboratory, Southern California. The achievement is a milestone that engineers and space scientists have been trying to achieve for decades and brings the prospect of humans setting foot on Mars … Read more