How South Africa is keeping invasive famine weed at bay

The poisonous herb, Parthenium hysterophorus, is one of the world's most destructive invasive plants. It threatens biodiversity, national food security and human health. Native to parts of Central and South America (Gulf ...

For global invasion, Argentine ants use chemical weapons

From their native home on the banks of South America's Paraná River, Argentine ants have conquered six continents and many oceanic islands. Their success is explained by several factors: they have more than one queen per ...

Researchers develop wearable solar thermoelectric generator

A recent study, led by Professor Kyoung Jin Choi in the School of Materials Science and Engineering at UNIST has introduced a new advanced energy harvesting system, capable of generating electricity by simply being attached ...

Photosensitive perovskites change shape when exposed to light

A crystalline material that changes shape in response to light could form the heart of novel light-activated devices. Perovskite crystals have received a lot of attention for their efficiency at converting sunlight into electricity, ...

Sea urchins—from pest to plate

It is one of the most valued seafood products and destroys kelp forests worth millions of NOK. Can sea urchin harvest be profitable? This is the subject of a project led by the Norwegian Institute of Water Research (NIVA). ...

How ambient energy could power the Internet of things

In the modern world, we are increasingly surrounded by digital sensors, cameras and communications devices sending data cloud-based analysis services. Those devices need power, and designers are finding new ways to draw it ...

Lake harvests are likely more fruitful than we knew

Harvests from freshwater fisheries such as the Great Lakes could total more than 12 million tons a year globally and contribute more to global food supplies and economies than previous estimates indicate, according to a study ...

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