New research key to revolutionary 'green' spacecraft propellant

In 2015, NASA, for the first time, will fly a space mission utilizing a radically different propellant—one which has reduced toxicity and is environmentally benign. This energetic ionic liquid, or EIL, is quite different ...

Venice reinventing itself as sustainable tourism capital

Away from the once-maddening crowds of St. Mark's Square, tiny Certosa island could be a template for building a sustainable future in Venice as it tries to relaunch its tourism industry without boomeranging back to pre-pandemic ...

India's excess fluoride in groundwater

Fluoride occurs naturally in groundwater. In small amounts, this is usually not a problem, but in India the concentration in many places exceeds the threshold at which is starts to present a health hazard. According to estimates ...

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