BusinessWhat's in a smartphone? 01:16This browser does not support the video element.BusinessMalte Rohwer-Kahlmann12/28/2021December 28, 2021Smartphones couldn't exist without rare earths. They cause it to vibrate, for example, and display vivid colors. So rare earth elements are in huge demand worldwide. But mining them is difficult and bad for the environment, and reserves are finite. Copy linkAdvertisement