Mercury has long been a mystery to scientists. Until recently, knowledge of the planet was limited to the grey, patchy landscape revealed by the Mariner 10 probe, NASA’s first mission to Mercury in the mid-1970s. Mariner-10’s photographs showed little detail of how the surface was formed. Like Venus, Earth and Mars, it was clear that […] … learn more→

We’re in a state of heightened expectation. The final Mercury and Air Toxics (MATS) rule, regulating one of the largest sources of toxic pollutants in our country (coal-fired power plants), was supposed to be released on Friday, December 16 to comply with a court-ordered deadline. (A proposed rule was released in March 2011). Advance news […] … learn more→