John Vidal, who was in Rio for the '92 Earth summit, looks back at that momentous event, and how the 2012 version compares Helicopters thundered up and down the chic Copacabana and Ipanema beaches. Tanks guarded the bridges and tunnels. The favelas were in lockdown, schools closed and supermarkets stood empty. Unexpectedly, George H W Bush, the 41st US president, flush with success at the collapse of communism, had arrived in...

-The Guardian  The counter conference is designed to foster alternative ideas and provide an outlet for discontent They come with speeches, placards, power point presentations and drums. Some with body paint and bows and arrows. Others with suits and business plans. Almost all driven by a desire for radical change. "Come re-invent the world" is the call to the People's summit, which has opened in Rio de Janeiro to counter what many participants...

-The United Nations World leaders, along with thousands of participants from governments, the private sector, non-governmental organizations and other groups will come together from 20-22 June in Rio de Janeiro, Brazil, to take part in the UN Sustainable Development Conference (Rio+20).   The Conference aims to shape how countries and their citizens can reduce poverty, advance social equity and ensure environmental protection to achieve long-term growth. Seven key areas have been identified by the...

-The Hindu The United Nations Conference on Sustainable Development (Rio+20) is set to take place on June 20 at Rio de Janeiro, 20 years after the 1992 Earth Summit on Environment & Development. World leaders, experts, and U.N. agencies are expected to take stock and reaffirm global commitment to sustainable development. The summit is taking place against the backdrop of threats of catastrophic climate change, unprecedented environmental degradation and widespread market...

Science and technology hold the key to developing low-input, high-output agriculture. The challenge is to use new technologies creatively and to make evidence-based decisions on the deployment of new technologies. Crop breeding is carried out to meet two broad objectives: one, to increase yields of a crop per se and, two, to protect the yield potential by developing crops resistant to diseases, pests and environmental extremes.  Both yield-enhancement and yield-stabilisation are...