sunlight

Life itself seeks fulfillment as plants seek sunlight.
Life itself seeks fulfillment as plants seek sunlight.
The miracle of vision lies in the mechanics of how the brain processes sunlight, that much is clear. Yet the step that matters the most, converting sunlight into vision, is totally mysterious. No matter what you see in the world—an apple, cloud, mountain, or tree—sunlight bouncing off the object makes it visible. But how? No one really knows,
Exposure to sunlight produces vitamin D in the body. It’s needed for health. Exposure to the ground provides an electrical “nutrient” [...]