Among the diseases that were wiped out were diphtheria, typhoid, cholera, whooping cough, tetanus, tuberculosis, smallpox, and polio.Innovations in sanitation have been key to the upgrades in the way our bodies work. Everything and everyone are far cleaner than they used to be. People bathe ...
byNASA The left Mast Camera (Mastcam) on NASA's Mars rover Curiosity took this image of Curiosity's sample-processing and delivery tool just after the tool delivered a portion of powdered rock into the rover's Sample Analysis at Mars (SAM) instrument. This Collection and Handling for In-si...