Nanotech has the potential to transform the efficiency of a whole sweep of industrial sectors, says Ilya Golubovich

There has been an explosion of clean-tech clusters, promising to help accelerate the next generation of sustainable technologies. Peter Adriaens, Shawn Lesser and Ben Taube explain

Clean-tech investors are beating a path to Asia – but opportunities there lie in commercialisation, not innovation, says Tom Whitehouse

South Korea is investing billions of dollars in an effort to reorientate its economy towards “green growth”. Joshua Speckman reports on an experiment without precedent

Canada has been overlooked by environmental investors but, say Martin Grosskopf and Rachel Davies, its improving policy environment and healthy, resource-based economic fundamentals are positioning it to deliver the next spurt of clean-tech growth

The US administration is considering whether to drag China to the WTO over alleged clean-tech protectionism. But ensuring that China plays by the rules is only one part of the story, says Jake Colvin

Could the looming scarcity of so-called rare metals put the brakes on the clean energy revolution – or generate new opportunities for recyclers? Lydia Heida reports

Ontario’s Green Energy Act set out to laid the groundwork for both renewable energy generation and clean-tech manufacturing. A year on, it has attracted billions of dollars of investment. Gloria Gonzalez reports

Paul Craane explains how a US government programme can make it easier for clean technology entrepreneurs to secure vital patents

For most clean-tech investments, intellectual property is fundamental to their value – making patent management crucial, says Mark Hilton