All organisms on Earth ride upon a "ferrous wheel" made of different forms of iron ... cycles establish the relations among ecosystem compartments at local, regional and global scales.

Mangrove forests along the Amazon coast release significant amounts of trace elements such as neodymium and hafnium. These ...

Earth's iron cycle is a very complex biogeochemical cycle that includes both biotic and abiotic components. In this article, we will illustrate the role that a group of single-celled ...