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Blue-Green Algae Runs Computer for Six Months

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Image: A container holding blue-green algae that powered a computer A computer has been powered for six months by blue-green algae contained in a tiny container. In the near future, similar photosynthetic energy producers might be utilized to power a variety of tiny gadgets without the usage of scarce and unsustainable materials like those used in batteries. Christopher Howe and his colleagues at the University of Cambridge made a tiny enclosure out of aluminum and translucent acrylic approximately the size of an AA battery. They put a colony of Synechocystis sp. PCC 6803 cyanobacteria – sometimes known as "blue-green algae" – inside, which create oxygen through photosynthesis when exposed to sunlight . During the shutdowns during Covid-19 pandemic in  2021, the device was put on a windowsill at the residence of team member Paolo Bombelli and stayed there from February to August. It ran an Arm microprocessor with a constant current between its anode and cathode. The compu

RECYCLING STEEL! totally rocks

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Steel is created when iron is mixed with carbon and a few other compounds. It is one of the most versatile, man-made alloys, being used. We use steel for almost everything, from automobiles, ships and bridges to utensils, cutlery and jewellery. But, did you know that steel is one of the most environment friendly components, being almost 100% recyclable . According to a statistic from 2009 about 66.8% of the steel in the world was recycled that year.                                   White-hot steel pours like water from a 35-ton electric furnace, Allegheny Ludlum Steel Corp., Brackenridge, Pa.  (Photo credit: Wikipedia) Recycling of steel is not a new phenomenon. It was put into action years ago, and because it was more economical than mining iron ore and making fresh steel from it, recycling steel gained popularity over the years. More importantly, steel, on recycling, does not lose its inherent strength. So if you think of it, your fork and spoon may have someday been a

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