In Lake Matano, they found that green rust played a dominant role in taking up nickel.

MSN: What green rust did long ago to the big blue ocean

In the modern world, some hope to use green rust to remove toxic metals and radioactive elements from the environment.

MSN: What green rust did long ago to the big blue ocean

In the ancient oceans, green rust's ability to pull nickel out of the water would have been critical for some life forms, since nickel is an important nutrient for microbes that produce methane.

MSN: What green rust did long ago to the big blue ocean

Like other iron minerals, green rust readily absorbs dissolved elements onto its surface, but green rust is not only particularly efficient at this in many cases, it can also react with toxic dissolved trace metals to make them insoluble, and as a result, renders them in nontoxic forms.

MSN: What green rust did long ago to the big blue ocean

Upstairs, designer David Mitchell created a serene guest-bedroom color scheme of olive green, rust, chocolate brown and khaki.

FORBES: The 2005 Investment Guide

And when that industry shrank and so many jobs were lost, who could have guessed that Pittsburgh would fare better than many other Rust Belt cities, and reemerge as a center for technology and green jobs, health care, and education?

WHITEHOUSE: Moving Forward on a New Foundation