None Protection de l'environnement Personne humaine Un seul homme Figure holding energy-efficient light bulb
None Personne humaine fond blanc Partie d'une série Side profile of the bone structure of a human skull
None internet Clavier numérique Téléphone - Équipement de télécommunication Robot hand with globe and mobile keypad in background
None Personne humaine globe terrestre Travail d'équipe Group of business executives standing on a globe
None Personne humaine technologie connexion Human hand taking measurement on ruler (Digital Composite)
None globe terrestre technologie Seulement des adultes Globe hovering above hand (Digitally Generated)
None canne Adulte d'âge mûr Personne humaine A man bumping into an oversized pill bottle as another man runs past the bottle
A diagram of the human skeleton, circa 1900. (Photo by Hulton Archive/Getty Images) fond blanc anatomie représentation humaine Human Skeleton
British diplomat and orientalist Sir Robert Hart (1835 - 1911) caricatured in the magazine Vanity Fair, December 1894. For 48 years, Hart served as Inspector General of China's Imperial Maritime Custom Service. (Photo by Hulton Archive/Getty Images) culture chinoise adulte mature personnes Sir Robert Hart