Sublime

A few years ago, I learned about a U.S. company that had a proprietary process for converting biomass, such as trees, into fuels. I went

Ohio), but the Danes did something unusual. They paired their R&D support with a feed-in tariff and, later, a carbon tax.

Others are using horizontal drills so they can tap these geothermal sources more safely and efficiently. It’s

As mining took off – triggered by the discovery in 1985 of a giant gold deposit – the miners enjoyed official backing too. “It was another world then, even for us Brazilians. To get to Roraima you had to cross the entire Amazon”, said Ramalho. Between 1987 and 1990, 30,000–40,000 garimpeiros arrived in the state. Airforce personnel helped them esta

With early investments in social media companies such as Twitter, Tumblr, Foursquare and Zynga, Fred Wilson has become one of the world's most watched angel investors. And one of the opportunities he is watching most attentively is the emerging industry of digital money.