bacteria stories

 
Concrete is the most popular building material on the planet, probably because it's very strong, easy to work with and cheap, being made mostly of rocks. There are some durability issues with concrete, though, and to make it stronger, Dutch scientists have added self-healing capsules to help buildings heal cracks on their own.
 
It took us humans a long, long time to figure out that electricity is good for blogging, but other living things have been taking advantage of it for ages to do other, more important things like lighting up Christmas trees. Scientists in Denmark have discovered a new sort of bacteria that also use electricity, making a living by acting as microscopic extension cords.

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