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Introduction

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Press Conference for the President's Emergency Plan for AIDS Relief, 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
Radio satellite array - SKA Africa

SKA to be shared

The world's most powerful radio telescope, the Square Kilometre Array, will be shared between South Africa and Australia and New Zealand

From GM crops to forestry

Learn more about the challenges of feeding our growing population versus caring for our planet
A globe with internet cables - Shutterstock

Speedy research

A new high-speed Internet link may boost data and research transfer between Africa and the rest of the world
Woman harvesting rice, Nepal - Flickr/Global Crop Diversity Trust

Goals for Rio+20

Colombian official Paula Caballero Gómez on why we need Sustainable Development Goals
Tunisian flag - Shutterstock

Reaching out

Tunisia wants to work with more developing countries — starting with India
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
Flour mill on a scooter - SRISTI, Ahmedabad

Alternative innovation

Facts and figures on grassroots innovation — its champions, challenges and potential to promote sustainability