UNITED NATIONS -- Indigenous people are being pushed off their lands to make way for an expansion of biofuel crops around the world, threatening to destroy their cultures by forcing them into big cities, the head of a U.N. panel said Monday.

Victoria Tauli-Corpuz, chair of the U.N. Permanent Forum on Indigenous Issues, said some of the native people most at risk live in Indonesia and Malaysia, which together produce 80 percent of the world's palm oil -- one of the crops used to make biofuels.