50.2 MB (50.0 MB compressed)
5083 x 3449 pixels
42.9 x 29.2 cm ⏐ 16.9 x 11.5 in (300dpi)
THIERRY BERROD, MONA LISA PRODUCTION / SCIENCE PHOTO LIBRARY THIERRY BERROD, MONA LISA PRODUCTION / SCIENCE PHOTO LIBRARY
Biomineralisation bacteria, scanning electron microscope (SEM). This limestone matrix has been produced by the embedded Bacillus cereus bacteria (small oval shapes) as they feed on nutrients and minerals. Jean-Francois Loubiere, founder of the company Calcite Bioconcept, has developed a way to use this biomineralisation process to preserve historical stone monuments. The bacteria are sprayed onto the stone with a nutrient base, and the layer of limestone produced protects the stone monuments against further erosion.
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