gave them a violet hue. So, anyone searching for little green men on other planets should keep an eye out for purple ones as well."/>

Purple life forms might have blanketed the Earth long before the leafy green ones came along and took over. These ancient microbes may have harnessed the sun’s energy through a process that gave them a violet hue. So, anyone searching for little green men on other planets should keep an eye out for purple ones as well.