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 United Nations World leaders, along with thousands of participants from governments, the private sector, non-governmental organizations (NGOs) 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). In our Seven Issues, Seven Experts series UN officials tell us more about the key issues that will be discussed during the conference and how we can contribute to make...

-The United Nations World leaders, along with thousands of participants from governments, the private sector, non-governmental organizations (NGOs) and other groups will come together in Rio de Janeiro, Brazil, to take part in the UN Conference on Sustainable Development (Rio+20) later this month. The Conference seeks 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...

-The Hindu   Dr. Hillel has pioneered a method of bringing water to crops in arid land regions While leading nations of the world are engaged in conflicts over the entire range of physical resources, from rare earth minerals to oil, this week the U.S. recognised the importance of a resource that matters much more to the vast numbers of the poor the world over — water. It was recognition of the importance of...

-PTI Rising populations are driving the Earth towards a catastrophic breakdown where species we depend on would die out, an international team of scientists has claimed, blaming the crisis on over use of water, forests and land for agriculutre.  Writing in the journal Nature, the team warned that the world is headed toward a tipping point marked by extinctions and unpredictable changes on a scale not seen since the glaciers retreated 12,000...