Image of a young Sudanese man posing with an automatic rifle

A Sudanese combatant in 2011 • Photo by Steve Evans (CC BY 2.0)

Image of a toddler playing with wooden blocks

Photo by Tatiana Syrikova from Pexels

Image of a line of ants silhouetted by sunlight

Photo by Prabir Kashyap on Unsplash

Aerial view of a circular staircase constructed in the form of a double helix

The double helix stairway at the Vatican Museum • Photo by ctbroek (CC BY-ND 2.0)

Computer-generated image of microbes

Photo by CDC on Unsplash

Image of infant with dirt all over face

Photo by Derek Owens on Unsplash

Image of Caenorhabditis elegans

Caenorhabditis elegans • Image by Bob Goldstein, UNC Chapel Hill (CC BY-SA 3.0)

Close-up image of an old, winkled hand

Photo by Amisha Nakhwa on Unsplash

Image of a dark moth resting on tree bark

Hypochrosis baenzigeri • Photo by budak (CC BY-NC-ND 2.0)

Vintage photograph of a severely deformed man

Joseph Merrick in 1889