Flowers being composted.
Crystals form as the liquid solvent evaporates away. These crystals were formed when a solution used in molecular biology was exposed to air for too long. The result is a beautiful crystal lattice.
This picture of a chicken feather taken using light microscope came from a chicken that was used in developmental biology to study the genes involved in elongation of the spine.
This is a mineral sandwich. Gypsum sandwiched between muscovite and biotite mica.