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

Sunnis once played a dominant role in the insurgency.

CNN: U.S. deaths in Iraq down 66 percent from last year

Hedge fund managers, who have played a dominant role in pushing market-oriented school reforms, like nonunionized charter schools, have had their comeuppance as improving achievement has proven far more difficult than they anticipated.

FORBES: An End to the Education Reform Myths

Richard Li's purchase of Hongkong Telecom (HKT), in which Li is thought to have played a key behind-the-scenes role, was criticized as making the clan too dominant in the local economy.

CNN: Up, Up And Away