Romário Schaefer is fattening up 3,300 pigs that he receives when they weigh around 22 kg and returns when they reach 130 to 160 kg - a huge increase in meat and profits for their owner, a local meat-processing plant in this city in Brazil.
Pigs, already the main source of income in this small municipality in southwestern Brazil, now have even more value as a source of electricity.
Black plastic pipes, readily available on the mainly empty shelves of Cuba’s shops, distribute biogas to homes in the rural town of La Macuca, buried under the ground or running through the grass and stones in people’s yards.
“We want to make history," agreed the teachers at the Chiquinho Cartaxo Comprehensive Technical Citizen School. They are the first to teach adolescents about generating power from bad weather in the semi-arid Northeast region of Brazil.
Promoting the widespread use of innovative technologies will be critical to combat the hostile effects of climate change and reduce greenhouse gas emissions, and many African countries are already leading the way with science-based solutions.
Nabela Zainab no longer chokes and coughs when she cooks a meal, thanks to the new biogas-fueled two-burner stove in her kitchen.
On the blue flame of her biogas stove, it takes half as long for rural doctor Arianna Toledo to heat bath water and cook dinner as it did four years ago, when she still used electric power or firewood.
In his parody of the Michael Jackson hit “Beat It”, the American satirist and singer Weird Al Yankovic has a parent urging his son to eat the food on his plate, warning that “other kids are starving in Japan”.
“People have gathered here to tell their politicians that the way in which we used energy and our environment in the 19th
centuries is now over,” says Radek Gawlik, one of Poland’s most experienced environmental activists. “The time for burning coal has passed and the sooner we understand this, the better it is for us.”
Johannes Kapelle has been playing the organ in the Protestant church of Proschim since he was 14. The 78-year-old is actively involved in his community, produces his own solar power and has raised three children with his wife on their farm in Proschim, a small village of 360 inhabitants in Lusatia, Germany.
Less than four percent of Egypt’s land mass is suitable for agriculture, and most of it confined to the densely populated Nile River Valley and Delta. With the nation’s population of 85 million expected to double by 2050, government officials are grappling with ways of ensuring food security and raising nutritional standards.
The massive Itaipú hydroelectric dam, shared by Brazil and Paraguay, has now become a model for the micro-scale production of an energy source that is not only clean, but also helps to reduce pollution and promote local development: biogas.
A new power plant in the eastern Senegalese village of Kalom is generating more than just electricity. Powered by agricultural waste, the station has lit up homes, lightened women's domestic burdens and even put a little money in some residents' pockets.
Tucked against the rolling hills of South Africa’s Eastern Cape province, a small rural school has been turning its kitchen scraps, and agricultural and human waste into methane gas for cooking, and nutrient-rich fertiliser, and is even recycling its water.