07/09/2016

US clears way for cleanup of Colorado mine after huge spill

A Colorado mine that spewed 3 million gallons of contaminated wastewater into rivers in three Western states was designated a Superfund site Wednesday, clearing the way for a multimillion-dollar federal cleanup.

Reconciling dwarf galaxies with dark matter

Dwarf galaxies are enigmas wrapped in riddles. Although they are the smallest galaxies, they represent some of the biggest mysteries about our universe. While many dwarf galaxies surround our own Milky Way, there seem to ...

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