Sandwip Island in southern Bangladesh almost has it all. It sits in the estuary of the Meghna River, which washes the island with rich, fertile silt, while plentiful sunlight helps coconuts, mangoes and pineapples to grow. It was once home to pirates but now thrives on honest trade. The main downside is that none of the 350,000 people living on the island have a connection to the national grid.
For years, only the wealthier Sandwip residents could generate electricity, by buying small diesel generators. About a decade ago, Bangladesh began promoting solar home systems (SHSs): small, stand-alone, rooftop photovoltaic devices that can reach poorer households. But power generation on an individual scale has drawbacks. There is a limited supply of subsidized diesel, so generators cannot be on all day, and they are noisy, polluting and have high maintenance costs owing to the low-quality fuel that is often used. And a typical SHS provides a maximum output of just 500 watts — enough for a few light bulbs and a mobile-phone charger, but too little for a hand blender or water pump.
To thrive, small enterprises need dependable electricity around the clock. So in the absence of the national grid, Sandwip went for the next best thing: a hybrid solar–diesel minigrid.
Read the rest of this feature in Nature Outlook’s Energy Transition issue: [html] [pdf].
Una plaga de mosca blanca cayó hace dos décadas en los campos de chilhuacle amarillo, rojo y púrpura de la familia Martínez. El chilhuacle es el chile estrella en varias versiones del plato insignia de Oaxaca –el mole, claro–, y por mucho tiempo los cocineros habían estado pagando altos precios por las notas ahumadas y cítricas de este chile. Pero su costo estaba a punto de subir todavía más. Continue reading Al rescate del chile más emblemático de México
A plague of whiteflies descended on the Martínez family’s fields of yellow, red, and deep purple chilhuacle in southern Mexico two decades ago. Chilhuacle is the star chilli in several versions of Oaxaca’s signature dish – mole – and cooks had long paid a premium for the chilli’s unique smoke and citrus flavours. But its cost was about to climb higher.
The Martínez family and the few other growers lost much of their chilhuacle crops in 1997. That year marked the start of a slow decline in chilhuacle production. Despite the chilli’s high market price, many growers stopped planting it. Continue reading Saving Mexico’s most totemic chilli
When the rains failed to come last year in central Isiolo County, Kenya, Mohamed Dahir figured he might lose 40% of his herd of 400 sheep and goats. Like several million other pastoralists in northern Kenya and across the border in Somalia and Ethiopia, Dahir and his herd live migrating between pastures.
Dahir did indeed lose some animals, but he received a payout from an emerging kind of livestock insurance: based on predictions of vegetation growth in the area and how many animals that might harm, his index-based livestock insurance policy gave him 50,000 Kenyan shillings (about £370) in cash before the drought and its consequences really settled in. He was able to buy enough hay from distant counties to save 95% of his herd. Continue reading How Kenya’s herders got their livestock insured