Your body uses magnesium for many critical functions. Learn which foods contain magnesium and how to get more of it. Joshua Cox-Steib Joshua Cox-Steib is a sociologist and freelance writer.

Want to start taking a magnesium supplement, but know little about the types of magnesium? You’re not alone, and learning about the options is essential to choosing the right kind for you.

Now, our calculations predict that even magnesium can become a superconductor when processed into ultra-thin films of thickness lower than 1 nanometer (one-billionth of a meter). The calculations ...