Micro-windmills to recharge cell phones

A University of Texas-Arlington research associate and electrical engineering professor designed a micro-windmill that generates wind energy and may become an innovative solution to cell phone batteries.

Aluminum Smelting

Aluminum smelting is the process of extracting aluminum from aluminum oxide by an electrolytic process. It involves carbon electrodes and electric arcs, and requires large amounts of electricity. This video from Alcoa shows how the process is done.