Unilever, the world's largest tea company, has announced plans to source its entire tea supply sustainably...to Rainforest Alliance standards. The news also signals the Rainforest Alliance's move into certifying tea farms in addition to...coffee, cocoa, bananas and other crops; sustainable forestry; and tourism... Rainforest Alliance certification involves a holistic approach – treating environment, ethics and economics equally. To meet the standards, farmers must commit to continuous improvements in worker welfare...and environmental protection. [refers to Lipton, PG Tips (both part of Unilever)]