On the outer edges of Buenos Aires proper, where the paved streets end and the narrow alleyways of one of Argentina’s largest shantytowns begin, visitors can find the En Haccore soup kitchen.
"This is the best thing ever invented for the poor," says Emanuel del Monte, pointing to a tank covered in black tarps protruding from the roof of his house. It forms part of a system built mostly from waste materials, which heats water through solar energy and is improving lives in Argentina.
Communication can be a key tool for the development of cooperation among the countries of the global South, but the ever closer relations between them do not receive the attention they deserve from the media.
It sounds like a contradictory play on words, but the countries of the industrialised North are currently the big supporters of South-South cooperation, as was demonstrated at the United Nations Second High-Level Conference on this subject, held in the Argentine capital.
"Look at this water. Would you drink it?" asks José Pablo Zubieta, as he shows a glass he has just filled from a faucet, where yellow and brown sediment float, in his home in Villa La Cava, a shantytown on the outskirts of Argentina's capital.
Climate change poses a global threat to food production, but for agriculture in Argentina it could also present new opportunities. In some areas of the country, farming conditions will improve, according to an analysis by experts of the latest climate projections.
Solar panels shine on the rooftop terraces of 10 neat buildings with perfectly straight lines and of uniform height, an image of modernity that contrasts with the precariously-built dwellings with unplastered concrete block walls just a few metres away, with rooms added in a disorderly manner, surrounded by a tangle of electric cables.
"Our philosophy is based on two principles: zero tolerance of pesticides or bosses," says Leandro Ladrú, while he puts tomatoes and carrots in the ecological bag held by a customer, in a large market in the Argentine capital, located between warehouses and rusty old railroad cars.
Nancy López lives in a house made of clay, wood and corrugated metal sheets, on private land dedicated to agriculture. She is part of an indigenous community of 12 families in northern Argentina that, like almost all such communities, has no title to the land it occupies and lives under the constant threat of eviction.
"In 2001 I was raped. I was 31 years old, had two university degrees and was still doing postgraduate studies, I had family, friends, a job. Many more resources than most rape victims have. Even so, it was the start of an ordeal whose scars I still feel today."
Only 18 percent of the population of Latin America and the Caribbean live in rural areas, but these are increasingly hotbeds of poverty, and climate change is playing a major role in this phenomenon.
The seed was planted more than 20 years ago by a group of indigenous women who began to gather to try to recover memories from their people. Today, women are also the main protagonists of La Voz Indígena (The Indigenous Voice), a unique radio station in northern Argentina that broadcasts every day in seven languages.
"I've been used to hauling water since I was eight years old. Today, at 63, I still do it," says Antolín Soraire, a tall peasant farmer with a face ravaged by the sun who lives in Los Blancos, a town of a few dozen houses and wide dirt roads in the province of Salta, in northern Argentina.
"We are the people who are excluded from the system," says Rafael Rivero, sitting in his apartment in a new social housing complex next to one of the largest slums in Buenos Aires. The contrast sums up the complexity of the social reality in the Argentine capital.
Although their contribution to global warming is negligible, Caribbean nations are bearing the brunt of its impact. Climate phenomena are so devastating that countries are beginning to prepare not so much to adapt to the new reality, but to get their economies back on their feet periodically.
Rural women play a key role in food production, but face discrimination when it comes to access to land or are subjected to child marriage, the so-called affinity group on gender parity within the G20 concluded during a meeting in the Argentine capital.
In front of one of the busiest railway stations in the capital of Argentina, there are long lines to buy vegetables, which farmers themselves offer directly to consumers, at prices several times lower than those seen in stores.
Questioned for its environmental and health impacts in Chile, where it is one of the country's main economic activities, salmon farming is preparing to expand in Argentina from Norway, the world's largest farmed salmon producer.
The news has triggered a strong reaction from civil society organisations.
Beef is one of the symbols historically identified with Argentina. After lean years, production and exports are growing, as is the debate on the environmental impact of cattle, which is on the radar of environmentalists and actors in the agricultural value chain.
How should cities address the problem of waste? The most important thing is to set a clear objective: that the day will come when nothing will be sent to final disposal or incineration, says an international expert on the subject, retired British professor of environmental chemistry and toxicology Paul Connett, author of the book "The Zero Waste Solution."
Between the dimly-lit, narrow alleyways of Villa 21, only 30 minutes by bus from the centre of the Argentine capital, more than 50,000 people live in poverty. It was there that La Garganta Poderosa (which means powerful throat), the magazine that gave a voice to the "villeros" or slum-dwellers and whose members today feel threatened, emerged in 2010.