The United States hasn't had a tin smelter since 1991. That year marked the closure of the Longhorn plant in Texas, which was built with federal funds in 1942 to reduce the country's import dependency ...
Making The Best Solar Tech Durable Most solar panels are based on two technologies: polysilicon, which makes up the majority of them, and thin-film cadmium telluride. However, there is a third way to ...