BBC - Heirs to the Rockefeller family, which made its vast fortune from oil, are to sell investments in fossil fuels and reinvest in clean energy, reports say.

PRNEWSWIRE - Charles and David Koch of Kansas are the wealthiest individuals in America's oil and gas sector, with a combined net worth of US$83 billion, according to a Wealth-X Top 10 list that includes billionaires from Texas, New York and Oklahoma.