When a reluctant George H.W. Bush, Sr., then U.S. president, changed his mind and decided at the eleventh hour to address the 1992 Earth Summit in Rio, he sounded defensive in his strong response to charges that the United States was one of the major powers responsible for the some of the world's worst environmental ills - from greenhouse gases to conspicuous consumption.
The heat wave in the Indian state of Orissa, which saw a 10-degree Celsius increase in summer temperatures last month, claimed 21 lives, according to government sources; unofficial estimates counted 87 deaths.
When world leaders endorse the final plan of action, titled "The Future We Want, at the Rio+20 summit in Brazil next week, a lingering question may remain unanswered: how best can the United Nations transform political platitudes into economic realities?
With heads of state from more than 120 nations and tens of thousands of civil society and international development experts gathering for the U.N. Summit on Sustainable Development next week, it is accepted wisdom that rethinking agriculture is one of most critical issues facing this and future generations.
The headline in a New York newspaper last March captured the essence of a future potential threat to political stability the world over: "U.S. Report Sees Tensions Over Water."
When the heavily hyped three-day U.N. Conference on Sustainable Development (UNCSD) comes to a close in Rio de Janeiro Jun. 22, what would be the yardstick to measure its successes and failures?
To deal with looming food crises in the coming decades, Africa needs a Green Revolution on par with what took place in Asia during the 1960s and 1970s, according to experts in Washington.
As Africa's Sahel region faces a new food crisis, smallholder famers hold the key to making future development policies sustainable.
Mexico and Central America look like they are covered in dried blood on maps projecting future soil moisture conditions.
With extreme weather pounding countries across a wide arc in the Asia-Pacific region, questions hover over entitlements for millions of people displaced by climate change, pledged under the Green Climate Fund (GCF) and other sources.
With illegal loggers clearing the equivalent of a football field of the world's most valuable forests every two seconds, local and international law enforcement systems should target the criminal operations that profit most from the trade, according to a new report released here Tuesday by the World Bank.
The upcoming Rio+20 conference has to be the moment in human history when the nations of the world come together to find ways to ensure the very survival of humanity, many science and environmental experts believe.
Rising temperatures are drying out northern forests and peatlands, producing bigger and more intense fires. And this will only get much worse as the planet heats up from the use of ever larger amounts of fossil fuels, scientists warned last week at the end of a major science meeting in Vancouver.
Mariem Mint Ahmedou sits cross-legged on a worn-out carpet in a basic tent built with mud bricks and layers of sewn-together fabric. Her eight-month-old twins, Hussein and Hassan, lie weakly against her body. Both of them have been malnourished since birth, because Beydar, undernourished herself, cannot produce enough breast milk to feed them.
As half of Mexico endures one of the most severe droughts in its history, cloud seeding appears to be a promising way to bring desperately needed rain, although it remains a source of controversy.
The global average temperature in 2011 was 14.52 degrees Celsius (58.14 degrees Fahrenheit). According to NASA scientists, this was the ninth warmest year in 132 years of recordkeeping, despite the cooling influence of the La Niña atmospheric and oceanic circulation pattern and relatively low solar irradiance.
The low humidity in Argentina's most agriculturally productive region has already caused a decline in grain yield - in particular corn and soybean - with ensuing losses for producers and the government.
Thousands of people in the northwest Argentine province of La Rioja are mobilising to stop an open-cast gold mining project in the Nevados de Famatina, a snowy peak that is the semi-arid area's sole source of drinking water.