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PhD student in South Africa

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Science at Rio+20 by iStock/RapidEye

Latest on Rio+20

We track the news on science, technology and the Rio+20 Earth Summit

Arab nations need to catch up

Building a true knowledge economy seems further from reach, and could be about to get harder, warns Athar Osama

From GM crops to forestry

Learn more about the challenges of feeding our growing population versus caring for our planet
Women operating foot water pump in Kenya - Flickr/waterdotorg

Grassroots ignored

Policymakers overlook grassroots innovation — but need to get it on the development agenda, says Tony Marjoram