Month: May 2019

Using sunlight to suck salt from seawater

Polymer foam offers potential route to practical solar desalination Freshwater scarcity is an urgent global issue. In some parts of the world, cities are growing increasingly reliant on seawater desalination plants. Ultimately, the goal of desalination is to take huge quantities of salt-laden seawater, and turn it into safe, drinking-quality water. Right now,...


3D printed nanogenerator powered by snow

Canadian researchers say that their device could find multiple uses in snowy environments Snow electrification – the natural phenomenon by which snow particles carry an electric charge – has been known by meteorologists since the early 1960s. The exact nature of the charge depends on temperature; snow layers tend to be positively charged between −5 °C...