Chipkos hopes its latest pair of fashionable flip-flops could help save the Costa Rican rainforests. One purchase will protect 100,000 square feet of the eco-rich land. But it's had no takers so far. Did we mention the sandals cost $18,000?
Cheap, versatile palm oil has long been used as an ingredient in everything from ice cream and chips to lotions and soaps. But its production causes severe environmental damage, which is why Unilever, the world's biggest buyer of palm oil, has decided to try an alternative: oil from algae.