People cooperating to build staircase

Team rowing boat from rain clouds to sunshine

People harvesting bounty from tall tree

Dollar signs covering brain on bust

Euro signs covering brain on bust

Yen signs covering brain on bust

British pound signs covering brain on bust

Currency symbols covering brain on bust

"Sex" text covering brain on bust

Dollar signs covering brain on bust

Euro signs covering brain on bust

Yen signs covering brain on bust

British pound signs covering brain on bust

Currency symbols covering brain on bust

"Sex" text covering brain on bust

Iceberg above and below water line

Iceberg above and below water line

Iceberg above and below waterline and word 'risk' underwater

Digestive system of anatomical model

Close up of multicolored double helix