Reuters: Greenpeace leveled on Tuesday new accusations of rainforest destruction against Indonesian agribusiness giant Sinar Mas and urged retailers Carrefour and Walmart to stop buying their products. Several top palm oil buyers, including Unilever and Nestle, have said they will stop buying from Sinar Mas after earlier Greenpeace accusations that Sinar Mas units such as pulp and paper firm APP and palm oil producer PT Smart Tbk cleared virgin rainforests and peatlands. Preservations …