Sodium is abundantly available in sea salt, as well as in the crust of the earth. Now, back to that power bank. Elecom's portable puck costs 9,980 JPY (US$67) in Japan, and is available in limited ...

All products are independently selected by our editors. If you buy something, we may earn an affiliate commission. As a parent of two young kids, that hour between walking in the door and getting ...

State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China Ability R&D Energy Research Centre, School of Energy and Environment, ...