For decades, chewing gum was the epitome of casual cool. But a new study has found that those who enjoy gum may be biting off more than they want to chew.

While people may be used to the notions of fishing for food and drilling for oil and gas, another marine resource has increasingly caught the attention of governments and companies: metals and rare-earth minerals.

He buys up whole swaths of rainforest to save them from destruction. He partners with legendary Hollywood actors to provide green energy for Indian schools. He campaigns to make the Olympic Games more environmentally friendly. Johan Eliasch is a man who gets things done.