Canada to impose additional tariffs on minerals and batteries imported from China
The West accuses Beijing of being bent on destroying competition in areas such as wind power, photovoltaic panels and batteries
Huff ‘n’ puff geothermal fracking: Earth batteries at 200% efficiency
Combining a pressure battery with geothermal power could unlock both cheap energy storage and shallow geothermal power
Tiny energy-harvesting MilliMobile robot has no need for batteries
The four-wheeled prototype device measures just 10 mm (0.4 in) per side, and tips the scales at about 1 gram (0.04 oz)