For bacteria, it’s a hard-knock life

Colonies of bacteria thrive on stiffer surfaces

Forget soft, cushy digs. Bacteria like to set up house and home on stiff surfaces.

BEST FOR BIOFILM A new study shows that biofilm-forming bacteria grow better on more rigid surfaces. Researchers looked at surfaces that varied from squishy to firm, shown left to right, and found that the stiffer the surface, the greater the number of bacterial colonies.