Content by The Scientist

A close-up view of the primary, iridescent feathers of a scarlet macaw (Ara macao)

The central cell of this microscopic alga, Corethron sp., from the Amundsen Sea, Antarctica, is only about 40 microns wide.

This cross-sectional, 3D image shows the tissues inside a fly’s head, including the eyes, which was captured with a new technique called ultra microscopy.

To curb infection, a T cell (blue) binds budding HIV particles (yellow and purple) to the cell membrane—using a protein called tetherin—to keep them from floating away.

This neuronal stem cell culture shows a rainbow of differentiation, with fluorescent tags that separate stem cells (orange/yellow) from their neuronal "offspring" (blue/green/purple).

This micrograph of colonial rotifers shows off their eyespots and corona.

The single-celled African trypanosomes that cause sleeping sickness swim through the blood stream to evade immune responses.

HeLa cells show off their tube-like, cytoplasmic projections called filopodia, which are thought to play a role in sensing, migration, and cell-cell communication.

Muscles and rows of pigment cells (melanocytes) are visible in this claw from the crustacean amphipode Phronima sp.

Fresh morning dew on a Water Horsetail (Equisetum fluviatile)

This Chewbacca-like creature is actually the caterpillar stage of a Flannel Moth (Megalopygidae).

The body of a green bottle fly (Lucilia sp.)

The skeleton of this 13-day-old chick embryo has been stained to highlight cartilage (blue) and bone (red).

This electron tomography image shows degenerating neurons from a knockout mouse that develops symptoms similar to human movement disorders, such as Parkinson's disease.

Check out some of the games being used in serious scientific research, education, and treatment.