Purple Earth Hypothesis suggests Earth was once a purple planet. Early microbes used retinal, not chlorophyll, for ...

To protect your purple heart plant, you can consider adding a layer of wood chips, gravel, or diatomaceous earth around it. The post How You Can Care For A Purple Heart Plant, Which Will Make A ...

George Patton liberated the camp during his push toward Berlin. The ruptured eardrum qualified Pressel for the Purple Heart. But he wasn’t concerned about it then. He was more concerned about ...