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Bacteria Used To Fix Cracked Concrete
An anonymous reader writes "Researchers at the UK's University of Newcastle have created a new type of bacteria that generates glue to hold together cracks in concrete structures — that means everything from concrete sidewalks to buildings that have been damaged by earthquakes. When the cells have been germinated, they burrow deep into the concrete until they reach the bottom. At this point, the concrete repair process is activated, and the cells split into three types that produce calcium carbonate crystals, act as reinforcing fibers, and produce glue which acts as a binding agent to fill concrete gaps."
Well, since grey goo is such an abstract concept, they thought they would rather use something more concrete ...
The Tao of math: The numbers you can count are not the real numbers.
I know, it looks very congested.
He who knows best knows how little he knows. - Thomas Jefferson
"and they have a built-in self-destruct gene that prevents them from proliferating away from the concrete target."
That never works in the movies. One cosmic ray and the gene is replaced by another one that says," invade humans and turn them into statues."