An erection is a vascular process where the corpora cavernosa fill with blood, increasing in length and thickness, often initiated by the parasympathetic nervous system.
The Camouflaged Looper (Synchlora aerata) makes its own costume by picking off bits of plant leaves and flowers and affixing them to its back to create camouflage!
Red changes behavior in subtle ways—even when not noticed
Studies in color psychology show red can influence emotional processing and behavioral outcomes (e.g., threat interpretation, dominance responses) even when participants do not consciously focu
