While traveling, only eat fruit that you peel yourself since plants can filter out bacteria and prevent it from traveling throughout their tissues. Well, why not apply this principle to filtering water directly? It’s not just a theory.
This landscape scene photographed by NASA’s Curiosity Mars rover shows rows of rocks in the foreground and Mount Sharp on the horizon. Curiosity’s Navigation Camera (Navcam) took the component images for this mosaic during a pause in driving.