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Explained: How execution of condemned persons is done
Once everyone has left the chamber, the warder gives a signal to the executioner who flicks a lever that releases crystals of sodium cyanide into the pail.This causes a chemical reaction ... deeply to ...
DPA Magazine59m
Solar power transforms sewage into green hydrogen
Components">solar energy, scientists have developed a method that can turn “sewage sludge” into sustainable resources, such ...